Question

How to factor x^2y-16y+32-2x^2

Answer 1

x^2y−16y+32−2x^2=x^2y−2x^2−16y+32

=(x^2y−2x^2)−(16y−32)

=x^2(y−2)−16(y−2)

= (x−16)(y−2)