## anonymous 4 years ago dividing radicals: what's 12/2-√15 is it 2√15/5 or am i wrong? I don't understand wolfram alpha

1. anonymous

it is telling you if you rationalize the denominator you will get $-\frac{24+12\sqrt{15}}{11}$[

2. anonymous

easier just to do it. write $\frac{12}{2-\sqrt{15}}\times \frac{2+\sqrt{15}}{2+\sqrt{15}}=\frac{12(2+\sqrt{15})}{-11}$

3. anonymous

oh i see where i went wrong thanks!