The area of a rectangle is 15 square inches. Its length x is 2 inches more than its width. Find the length x in inches of the rectangle. (Enter an exact number.)

Answer 1

15 = (W+2)W = W^2 +2W

W^2 + 2W -15 = 0

(W+5)(W-3) = 0

W-3=0

W = 3 inches wide

L = W+2 = 5 inches long