Question

Rationalise the Numerator:
(√4+h - 2)/h

Answer 1

\[\frac{\sqrt{4+h}-2}{h}\times \frac{\sqrt{4+h}+2}{\sqrt{4+h}+2}\] is a start

Answer 2

leave the denominator in factored form
the numerator uses \((a-b)(a+b)=a^2-b^2\) to get
\[4+h-4=h\]