Question

X^2-4x^2y^2+y^2+2*x*y

Answer 1

(x + y - 2xy)*(x + y + 2xy)

Explanation:

x^2-4x^2y^2+y^2+2*x*y

=x^2 + 2xy + y^2 - (2xy)^2

=(x + y)^2 - (2xy)^2

=(x + y - 2xy)*(x + y + 2xy)