Question

If the length of a rectangle is 4x^2-x+2, and the width of the rectangle is 5x-3, what is the perimeter of the rectangle expressed as a polynominal?

8x^2-12x+10

8x^2+8x-2

8x^2-8x+2

8x^2+12x-2

Answer 1

8x²+8x-2

Explanation:

P = 2l + 2w

P = 2(4x²-x+2) + 2(5x-3)

P = 8x²-2x+4 + 10x-6

combine like terms:

P = 8x²+8x-2