Question

2/(1-sqrt 3)

Answer 1

\[\frac2{1-\sqrt 3}\]to rationalise the denominator

multiply by \[1=\frac{1+\sqrt3}{1+\sqrt3}\]

\[\frac2{1-\sqrt 3}=\frac2{1-\sqrt 3}\times1=\frac2{1-\sqrt 3}\times\frac{1+\sqrt3}{1+\sqrt3}=\]