Question

Factories:-

$x²+z²+2xz$

Answer 1

We have,

$x^2+z^2+2xz$
$=x^2+2xz+z^2$

Now splitting the middle term.
$=x^2+xz+xz+z^2$
$=x(x+z)+z(x+z)$
$=(x+z{)}^2$

Hence, this is the answer.