Question 353990
x * y = 216


2(x-4)(y-4) = 224 ___ (x-4)(y-4) = 112 ___ xy - 4x - 4y + 16 = 112


216 - 4x - 4y + 16 = 112 ___ 120 = 4x + 4y ___ 30 = x + y ___ 30 - x = y


x(30-x) = 216 ___ 0 = x^2 - 30x + 216


factoring ___ 0 = (x - 18)(x - 12)