X2-y2-8x+16y разложите ** множители

Question

X2-y2-8x+16y разложите на множители

Answer 1

(X2-8x)(-y2+16y)
X(x-8)-y(2-16)
(X-y)(2-16)

Answer 2

(x^2-8x)-(y^2-16y)= x(x-8)-y(y-16)=(x-y)(x-8)(y-16)