Question

Which of the following is the reciprocal of x^2 – 2x – 8?

A. (x + 2)(x – 4)

B. 1/ (x + 2)(x – 4)

C. 1/ (x – 8)

D. 1/(x + 2)

Answer 1

The area of a rectangle is x^2 - 2x - 15 and the length of the rectangle is x + 3. Find the width of the rectangle.

A. x – 5

B. x^2 + 15

C. x + 5

D. (x – 2)(x + 3)

Answer 2

I need help with both questions please?

Answer 3

What does the word "reciprocal" mean?

Answer 4

i got the answer to the first one.

Answer 5

need help with the second one

Answer 6

The area of a rectangle is x^2 - 2x - 15 and the length of the rectangle is x + 3. Find the width of the rectangle.

A. x – 5

B. x^2 + 15

C. x + 5

D. (x – 2)(x + 3)

Answer 7

the answer to the first is b. 1/(x+2)(x-4)

Answer 8

Area of a rectangle is Length * Width ==> A = L*W

L = (x+3)

A = (x+3) * W

x^2 - 2x - 15 = (x+3) * W

So can you factor x^2 - 2x - 15 = (x+3)( ) ?

The missing piece is the answer.

Answer 9

x-2

Answer 10

Are you saying that (x+3)(x+2) = x^2 -2x -15 ?

Answer 11

no i'm saying (x+3)(x-2)

Answer 12

Oh sorry.

(x+3)(x-2) = x^2 -2x -15

Check the constant terms... 3*-2 = -6 not -15

Answer 13

ok

Answer 14

3*-5=-15 so it is x-5

Answer 15

What is the remainder of (x^3 – 6x – 9x + 3) ÷ (x - 3)
A. -51

B. -51/x - 3

C. -17/x

D. -17/ x - 3

Answer 16

Hey I'm leaving now. Time to get back to work for me. Good luck with the rest of your problems.

Answer 17

can you help me with this last one