Question

Rationalize the expression and simplify. id="TexFormula1" title="\frac{\sqrt{4+h}-2 }{h}" alt="\frac{\sqrt{4+h}-2 }{h}" align="absmiddle" class="latex-formula">

Answer 1

You multiply by the conjugate to both the denominator and numerator.
After that you can simplify by canceling the 4 and then you are able to simplify the (h) as well.