Question

The width of a rectangle is 9 feet less than the length. The area is 580 square feet. Find the length and width of the rectangle.

Answer 1

A=580, A=LW, W=L-9

580=L(L-9)

L^2-9L-580=0

(L-29)(L+20)=0, L>0 so L=29, W=29-9=20

Answer 2

5220

Explanation: