Question

factorise the following algebric expression
z^2 – (x² – 2xy + y²)​

Answer 1

Answer:

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

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

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