Question

Factorise the following :-

(x² - 2xy + y²) - z²​

Answer 1

Step-by-step explanation:

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

$= {(x - y)}^{2} - {(z)}^{2}$

$= (x - y + z)(x - y - z)$

Hope this helps you :)