Question

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.

Answer 1

we know that

[perimeter of rectangle]=2*[length+width]
length=(2x-7)
width=(x²-5)
[perimeter of rectangle]=2*[(2x-7)+(x²-5)]----> 2*[x²+2x-12]---> 2x²+4x-24 in

the answer is
(2x²+4x-24) in