Question

solve with full process

Answer 1

-5z^2/√5z
-√5z*√5z/√5z. [when we break -5z^2]
so the last answer will come is
-√5z

Answer 2

$-\dfrac{5z^2}{\sqrt{5}z}$

Rationalise the denominator:

$= -\dfrac{5z^2}{\sqrt{5}z} \times \dfrac{\sqrt{5}}{\sqrt{5}}$

Put into single fraction:

$= -\dfrac{5\sqrt{5}z^2}{5z}$

Simplify by canceling off common factor 5z:

$= -\sqrt{5}z}$