Question

Write in the form of a + b√3

Answer 1

=$\frac{(2+ \sqrt{3} )^{2} - (2 \sqrt{3} )(2- \sqrt{3}) }{ 2^{2}- (\sqrt{3} )^{2} }$
=$\frac{4+3+4 \sqrt{3}-(4 \sqrt{3}-6) }{4-3}$
=$\frac{4+3+6}{1}$
=$13$