Question

$factorise : (x^2 - 2xy + y^2)-z^2$
step by step explanation pls....​

Answer 1

Answer:

(x-y+z)(x-y-z)

Step-by-step explanation:

I will use

(a-b)^2=a^2+b^2-2ab

(a+b)(a-b)=a^2-b^2

$( {x}^{2} - 2xy + {y}^{2} ) - {z}^{2} \\ {(x - y)}^{2} - {z}^{2} \\ (x - y + z)(x - y - z)$

Answer 2

Hope it helps!!
you mainly have to use identities....