f=4x-3)²-(2x+4)²
a) factorise l'espression:

b)déduis en les solutions de l'equation: 4x-3)²-(2x+4)²=0

Answers

Answer 1

Answer:

A)(6x+1)(2x-7)

B)x={-1/6,7/2}

Step-by-step explanation:

A) (4x-3)²-(2x+4)²

(4x-3+2x+4)(4x-3-2x-4) (as a²-b²= (a+b)(a-b) )

(6x+1)(2x-7) (ans)

B) (4x-3)²-(2x+4)²=0

=>(6x+1)(2x-7)=0 (as we have gotten from a that (4x-3)²-(2x+4)² is equal to (6x+1)(2x-7) )

=>6x+1=0

=>2x-7=0

=>6x=-1

Therefore

x=-1/6

=>2x-7=0

=>2x=7

Therefore

x=7/2


Related Questions

7k = 3k - 36
It’s gotta be a step by step equation

Answers

K=-9 Bc you move the variable to the left and then collect like terms and divide both sides

BRO CAN ONE PERSON HELP ME WITH THIS QUESTION THIS IS MY LAST QUESTION ON THIS GD TEST PLZ I'LL GIVE BRAINLIEST IF YOU ANSWER RIGHT AND HAVE AN EXPLAINATION.
Solve C=59(F−32) for F

Answers

Answer:

F = C/59 + 32

Step-by-step explanation:

use standard algorithm to solve
1,457 x 56​

Answers

it needs 20 characters to submit lol

Bill is making accessories for the soccer team. He uses 777.35 inches of fabric on headbands for 32 players and 3 coaches. He also uses 301.76 inches of fabric on wristbands for just the players. How much fabric was used on a headband and wristband for each player?

Answers

Answer:

Fabric used on a headband for each player = 22.21 inches

Fabric used on a wristband for each player = 9.43 inches

Step-by-step explanation:

Let fabric used on each headband = [tex]h[/tex] inches

Let fabric used on each wristband = [tex]w[/tex] inches

Number of players for which headband is made = 32

Fabric used on 32 players = 32[tex]h[/tex] inches

Number of coaches for which headband is made = 3

Fabric used on 3 coaches = 3[tex]h[/tex] inches

As per question statement:

Total fabric used on headbands = 777.35 inches

[tex]32h + 3h = 777.35\\\Rightarrow 35h = 777.35 inches \\\Rightarrow h = 22.21\ inches[/tex]

Number of players for which wristband is made = 32

As per question statement:

Fabric used on wristbands = 301.76 inches

[tex]32w = 301.76\\\Rightarrow w = 9.43\ inches[/tex]

Therefore, the answer is:

Fabric used on a headband for each player = 22.21 inches

Fabric used on a wristband for each player = 9.43 inches

Hi! Please help me solve this:

How did the temperature change if:
at first it decreased by 10% and then by 30%?
(I need the percent value)

Answers

Answer

by 20%????

Step-by-step explanation:

Please answer correctly !!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

Answer:

snisisbshdgsbsjsiejbebdbxhhxdyud

Step-by-step explanation:

sorryrydhehsindebbdhddhdb

clout chaser don’t use beauty for hype

Answers

Beauty is hard to accept when you are seeing it in yourself. This is a valid question to ask, however on this sight not exactly. They obviously believe they are not ugly and other people are saying they are. Models use their beauty for hype so it's not a bad thing. In this case all you are doing is giving this person more attention. Without you this wouldn't have been any of my concern. Instead of posting about someone else keep it to yourself because what you have to say about them is irrelevant. This is a homework site so to slow down the pace of things that aren't don't post stuff like this because you are just adding onto it. Thanks for the points have a great day god bless.

Select all the points that are on the graph of the line 2x + 3y = 6

Answers

Answer:

The points are;

X       Y

3       0

0       2

12     -6

15     -8

This is in no particular order.

Step-by-step explanation:

Hadley runs several times around the
track. One lap around the track is
equal to 0.15 miles. She then runs 0.4
miles home for a grand total of 1.75
miles. Determine the number of laps
Hadley ran around the track.

Answers

1.75 - .40 is 1.35 so 1.35 divided by .15 is 9 do she ran the track 9 times

Pls helppppppppp!!!!!!’

Answers

Answer:

it c

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Which absolute value number sentence is false? a. 171 +1-6 = 13 b. 1-151 - 1-8] = 7 c. 1-12 + 1-2 = 10 d. 1111 - 1-41 = 7 ​

Answers

Answer:

C.

Step-by-step explanation:

This is because the absolute value of -12 is 12 and the absolute value of -2 is 2. So then the equation would look like this: 12 + 2 = 10, which is a false equation.

Hope this helps!

Brad has recorded insect activity data for 40 days. He has recorded 1/6 of the data needed for his science fair project. How many total days does he need to record data? Write an equation and  explain how you used it to find your answer​

Answers

Answer:

40/6= 6.6667(20/3)

Step-by-step explanation:

I divided the number of days into 6.

Answer:

[tex]x = 240 days[/tex]

Step-by-step explanation:

If we know that Brad completes 1/6 of his project every 40 days, that means it will take him 40 x 6 days to complete this project. If where to write this down as an equation we get the following.

Let "x" be the total number of days Brad needs to finish his project, then....

[tex]\frac{1}{6} x = 40 days[/tex]

[tex](\frac{1}{6} x)(6) = (40)(6)days[/tex]

[tex]x = 240 days[/tex]

According to the table below how many cookies can be made with 1 cup of chocolate chips?




A. 3
B. 2
C. 5
D. 4

Answers

The answer is C. 5 hope this helps

I've been stuck on this for like 20 minutes ;-;

Answers

Answer:

3+2

Step-by-step explanation:

Answer:

3+2

Step-by-step explanation:

What triangle is this ????Pleaseeee helppp !!!!!!!!!! Will mark Brianliest correct answer !!!!!!!!!!!!!!

Answers

Answer: equilateral

Step-by-step explanation:

Answer:

equalateral (i know i spelled it wrong)

Step-by-step explanation:

they all have the same lengths -6.07-

just get 10 points get some points have fun use them wizely

Answers

Answer:

thank you

Step-by-step explanation:

what 15 yards in feet

Answers

Answer:

45

Step-by-step explanation:

1 yard= 3 feet

What is a real estate investment group?
a. A collection of investors who pool their resources in order to purchase and manage property
for a profit.
An investment trust which uses investors' money to purchase property, which it then manages
in the investors' stead.
A category of real estate, such as "houses' or "apartment buildings."
A set of several properties purchased all at once.
b.
c.
d.

Answers

Answer: a. A collection of investors who pool their resources in order to purchase and manage property  for a profit.

Step-by-step explanation:

The real estate investment group can be defined as the group of investors who purchase a common property to manage it and use it for obtaining profit. It refers to the entity which mainly focuses on the real estate. The real estate investors for the sake of profits they choose to purchase, sell, renovate and finance the properties on large or small scale.

simplify: -7 - 8

Change 1 6/7 to a decimal round to the nearest tenth.

Answers

Answer:

-15

1.9

Step-by-step explanation:

-7 - 8 = -15

1 and 6/7 = 1.857142857142857142857142.....

about 1.9

What is the answer for (2b + 8)5 ?

Answers

Answer:

Expanded, the answer would be 10b + 40

Step-by-step explanation:

Just multiply 8 to 2b and 8

4.x + 7y = -23 8x + 5y = -1 using elimination ​

Answers

Answer:

 Slope = 39.000/2.000 = 19.500

 x-intercept = 1/234 = 0.00427

 y-intercept = -1/12 = -0.08333

Step-by-step explanation:

On a graph, how do you find slope?

Answers

Answer:

you move up and across then write it as a fraction rise over run

So the formula is (y2 - y1) / (x2 - x1)

What are the coordinates of point A?


Answers

Answer:

the left side should be -5 the other side should be 7

Answer:

(7, -5)

Step-by-step explanation:

1. After running, Maggie is 3 miles east of her starting point, and 4 miles north of her starting point. What angle could represent her direction of travel?​

Answers

Answer:

The angle is 53.13 degrees

Step-by-step explanation:

Here, we want to calculate angle representing the direction of travel

From the question, she is 3 miles east and 4 miles north of her starting point

So the angle that represents her direction of travel will be that which makes a cut with the horizontal (the east direction)

Now, let us picture a right-angled triangle, with 3 miles direction being the adjacent and the 4 miles direction (facing the angle we want to calculate and is the opposite)

the trigonometric identity to use is the Tangent

Tan theta = 4/3

theta = arc tan (4/3)

theta = 53.13 degrees

PLEASE ANSWER QUICKLY



Gavin deposited $200 into his savings account that is compounded semi-annually at an interest rate of 9%. Gavin hoped he would have enough money in 8 years to buy a $400 gaming console for college. Is Gavin correct? Write and solve an equation, showing your work to justify your answer.
Answer:

Answers

ANSWERS AND STEPS???

This formula is used to calculate the weekly pay of a letting agent. Weekly pay = basic pay + number of houses rented x bonus The basic pay is £400 and a bonus of £75 is paid for each house rented. Mrs Lewis rents out 5 houses in one week. Calculate her pay.

Answers

Answer:

£775

Step-by-step explanation:

From the question, it was given that:

Weekly pay = basic pay + number of houses rented x bonus

This expression can be used to determine the amount of money being paid to the agent every week.

When basic pay = £400, bonus = £75, and the number of house rented = 5.

Then,

Weekly pay = 400 + 5(75)

                    = 400 + 375

                    = 775

Weekly pay = £775

The amount of money paid to Mrs Lewis every week is £775.

How do you find m and n?

Answers

Answer:

180°-50=130 this is m°

50-130=70 that is n°

order these numbers from from least to greatest

27    3/9   1/5    1.23    75%​

Answers

Answer:

I don't know...jkkk

Step-by-step explanation:

First put the fractions and percents as decimals

27, 0.5,0.2, 1.23, 0.75

Now you can easily order them from LEAST to GREATEST

0.2,0.5,0.75,1.23,27

Hope this helps! :)

I need help like really bad.

Answers

Answer:

PEMDAS

Step-by-step explanation:

parenthesis

Exponents

Multiply

Divide

Add

Subtract



A gift shop wants to make gift baskets for its regular customers. There are 24 bottles
of shampoo, 36 tubes of hand lotion, and 48 bars of soap. The same number of each
item should be in each basket. What is the greatest number of baskets that can be
made?

Answers

Answer:

Find the biggest # that can divide all 3 #'s, and that's your answer.

Step-by-step explanation:

24 is divisible by:

1, 2, 3, 4, 6, 8, 12, 24

36 is divisible by:

1, 2, 3, 4, 6,  9, 12, 18, 36

48 is divisible by:

1, 2, 3, 4, 6, 8, 12, 16, 24, 48

The biggest # that can divide all 3 #'s is 12, so the greatest amount of baskets that can be made is 12 baskets.

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