multiplying polynomials
help help help help:p​

9514 1404 393

Answer:

  3

Step-by-step explanation:

For f(x) = x^3 -2x^2 -7x +5 and x=1/(2-√3), we have ...

  f(x) = ((x -2)x -7)x +5

and ...

  x = 1/(2-√3) = (2+√3)/(2^2 -3) = 2+√3

Then ...

  f(2+√3) = ((2 +√3 -2)(2 +√3) -7)(2 +√3) +5

  = (3+2√3 -7)(2+√3) +5

  = 2(√3 -2)(√3 +2) +5 = 2(3 -4) +5 = -2 +5

  f(1/(2 -√3)) = 3

_____

If you really mean x = (1/2) -√3, then f(x) = (42√3 -3)/8.

Answer:

2 students

Step-by-step explanation:

.............

Answer:

It is 5.61

Step-by-step explanation:

22×3=66

1.87×3=5.61

Although I'm going to answer this question, I have to point out that this problem is NOT stated clearly. The problem being we don't know if angle AMV is a right angle.

But I'm assuming it is and thus we need to use the Pythagorean theorem.

AV=[tex]\sqrt{5^2+12^2}[/tex]

AV=13

Therefore answer is C. :D

Answer:

First, subtract y2 - y1 to find the vertical distance. Then, subtract x2 - x1 to find the horizontal distance. Don't worry if the subtraction yields negative numbers. The next step is to square these values, and squaring always results in a positive number. Hopefully this makes sense...

Step-by-step explanation

Answer:

radius by 2 ye this will be the correct answer d=r/2

Answer:

No real solution

Step-by-step explanation:

The simplest form is √23

Answer:

4.79583152331

Step-by-step explanation:

.................

...

Answer:

x=75°and y=x= 75°

Step-by-step explanation:

Reason: opposite angles are equal and how I got 75 is by drawing an extension line and finding the other angle (i.e. angle on a straight line=180) so 180-105=75.

Answer:

The sequence is not geometric or arithmetic because there is no common difference or common ratio between each term.

Answer:

159.68

Step-by-step explanation:

68% of 499 is 339.32

499 -339.32=159.68

hope this helps

Answer:

rotation ,then reflection

Answer:

5x4x3=60 3x4x5=60

Step-by-step explanation:

Answer:

option 1 is correct

Step-by-step explanation:

Can I plz have brainliest. thx :-)

Have a nice day!

Answer: Quadrilateral parallelogram, trapezoid; trapezoid

Step-by-step explanation:

A trapezoid has four sides so that makes it a quadrilateral, a parallelogram has at least two parallel sides (top and bottom), a lastly a it's a trapezoid and trapezoid has only one pair of parallel sides.

Answer:

The current or I = 12.

Step-by-step explanation:

Ohm's law requires you to divide 60 volts by 5 ohms, hence giving you 12.

Answer: A

Step-by-step explanation:

Answer:

0.25

Step-by-step explanation:

You have 4 options:

1/4: red

1/4: blue

1/4: green

1/4: yellow

Combined equals a whole, so each one of them equals 0.25

Answer:

Step-by-step explanation:

[tex]h^2=x^2+y^2\\ \\ h=y+4,\ x=y+2\\ \\ (y+4)^2=(y+2)^2+y^2\\ \\ y^2+8y+16=y^2+4y+4+y^2\\ \\ y^2+8y+16=2y^2+4y+4\\ \\ y^2-4y-12=0\\ \\ (y-6)(y+2)=0\\ \\ y>0\\ \\ y=6ft\\ \\ h=6+4=10ft[/tex]

Answer:

Ok hold on one moment

Step-by-step explanation:

Answer: At the beginning of the quotes. I hope this helps!

Answer:  beginning

Step-by-step explanation:

Answer:

m+n=2n+8

m=n+8

n=m-8

2k=m+n

Step-by-step explanation:

Answer:

Step-by-step explanation:

Two figures are said to be similar if they are the same shape. In more mathematical language, two figures are similar if their corresponding angles are congruent , and the ratios of the lengths of their corresponding sides are equal.

Using the weighed mean, it is found that the mean number of sentences per paragraph in the textbook is given by:

B. 5

The weighed mean is given by the sum of all elements in a data-set multiplied by it's weight, divided by the sum of the weights.

In this problem:

Considering that there are 150 books, we have the mean is:

M = 750/150 = 5.

Hence option B is correct.

More can be learned about the weighed mean at https://brainly.com/question/24398353

Answer:

4

Step-by-step explanation:

because the variable is h and the constant is 3

Answer:

sorry i don't knowe this, i realy want to help you

Answer:

90

Step-by-step explanation:

the formula to find the area of any right triangle is:

a=leg 1

b=leg 2

(a*b)/2

(15*12)/2

180/2

90

Answer:

90

Step-by-step explanation:

Answer:

There are two ways

Step-by-step explanation:

1. Multiply 5 by the fraction, 1/3

When you multiply a whole number by a fraction, it will give the same result as you would have by dividing it.

2. Divide 5 by 3

Answer:

15

Step-by-step explanation:

Answer:

x=−8

y=6=

Step-by-step explanation:

3x+4y=0

5x−3y=−58

In order to solve by elimination, coefficients of one of the variables must be the same in both equations so that the variable will cancel out when one equation is subtracted from the other.

3x+4y=0,5x−3y=−58

To make 3x and 5x equal, multiply all terms on each side of the first equation by 5 and all terms on each side of the second by 3.

5×3x+5×4y=0,3×5x+3(−3)y=3(−58)

Simplify.

15x+20y=0,15x−9y=−174

Subtract 15x−9y=−174 from 15x+20y=0 by subtracting like terms on each side of the equal sign.

15x−15x+20y+9y=174

Add 15x to −15x. Terms 15x and −15x cancel out, leaving an equation with only one variable that can be solved.

20y+9y=174

Add 20y to 9y.

29y=174

Divide both sides by 29.

y=6

Substitute 6 for y in 5x−3y=−58. Because the resulting equation contains only one variable, you can solve for x directly.

5x−3×6=−58

Multiply −3 times 6.

5x−18=−58

Add 18 to both sides of the equation.

5x=−40

Divide both sides by 5.

x=−8

The system is now solved.

x=−8,y=6

Coordinates are: (-8,6)

Graph:

Answer:

12 days

Step-by-step explanation:

Trust me I did the work.