The length of a rectangle is 2ft less than tree times width the area is 60 square ft. Find the length of the rectangle.
L = 3 W - 2 ... W = (L + 2) / 3
L * W = 60 ... (L^2 + 2 L) / 3 = 60
L^2 + 2 L - 180 = 0
use quadratic formula to find L
L * W = 60 ... (L^2 + 2 L) / 3 = 60
L^2 + 2 L - 180 = 0
use quadratic formula to find L