Question

Factorise x2 + z2 - 2xz​

Answer 1

Answer:

It is (x-z)^2

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Answer 2

Question:-

Factorise x2 + z2 - 2xz

Solutions:-

x² + z² + 2xz

= x² + 2xz + z²

Now splitting the middle term.

= x² + xz + xz + z²

= x( x +z) + z ( x + z)

= ( x + z) ²