Question

(x^2-2xy+y^2)-z^2 please solve this

Answer 1

It will be (x-y)^2 - z^2

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

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

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

Answer 2

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