Question

factorise the expression- x^2-2xy-y^2

Answer 1

Answer:

$(x - y)^2$

Step-by-step explanation:

$x^2 - 2xy + y^2$

= $(x)^2 - 2[(x)(y)] + (y)^2$

= $(x - y)(x - y)$

= $(x - y)^2$

∴ $x^2 - 2xy + y^2 \\= (x - y)^2$