Question

Factorise X 2 +Z 2 -2xz

Answer 1

x^2 + z^2 - 2xz
x^2 - xz + z^2 - xz
x(x - z) - z(x - z)
(x - z)(x - z)
(x - z)^2

Answer 2

x^2 + z^2 - 2xz

x^2 - xz + z^2 - xz

x(x - z) - z(x - z)

(x - z)(x - z)

(x - z)^2