Solve with full process – InterviewSolution

1.

Solve with full process

Answer»

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

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:

$= -\sqrt{5}z}$

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