Question

x la putetea a 2 -4x+4-y descompuneti in factori

Answer 1

 $x^{2}-4x+4-y^2=(x-2)^2-y^2=(x-2+y)(x-2-y)=(x+y-2)(x-y-2)$

Answer 2

x^2-4*x+4=(x-2)^2-y.