Let width be x Length would be x + 3 Area = L * W Make an equation (x) * (x+3) = 70 x^2 + 3x = 70 x^2 + 3x - 70 = 0 Quadratic formula (-3 +/- rt 3^2 - 4 * 1 * (-70))/(2 * 1) x1 = (-3 + 17)/2, x2 = (-3-17)/2 x = 7, x = -10 Dimension cannot be negative