Question

factorize:
(x²- 2xy + y²) - z²​

Answer 1

Answer:

In above question the first three terms of polynomial satisfy the identity of (a-b)^2

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

then (x^2-2xy+y^2)-z^2

=(x-y)^2-z^2