Question

Factorise:
x²+z² - 2xz​

Answer 1

Answer:

Using the identity a2-2ab+b2

And grouping terms

x2-2xz+z2

(x-z)2

Answer 2

Answer:

(x-z)^2

Step-by-step explanation:

x^2+z^2-2xz

x^2-xz+z^2-da

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

(x-z)(x-z)

(x-z)^2