Question

HURRY AND ANSWER AS FAST AS YOU CAN!!! PLEASE I NEED THESE BY TODAY The length of a rectangle is (2x - 7)inches and the width is (x2 - 5) inches. Find an expression for the perimeter of the rectangle. A) 2x3 + 35B) x2 - 2x + 2X) x2 + 2x - 12 D) 2 x 2 + 4x -24 The sum of −15x2 −5x + 11 and another polynomial expression is −9x2 + 3x −10. What is the other polynomial expression? A) 24x2 + 8x − 8 B) 6x2 + 8x − 21 C) − 24x2 + 8x + 8 D) − 24x2 + 8x − 8

Answer 1

Q1.

Perimeter = 2(Length + Width)

Perimeter =
`2((2x-7)+(x^2-5))`

`2\left(2x-7\right)+2\left(x^2-5\right)`

`4x-14+2x^2-10`

`2x^2+4x-24`

Q2.

`(-9x^2+3x-10)-(-15x^2-5x+11)`

`-9x^2+3x-10+15x^2+5x-11`

`6x^2+8x-21`