Question

Racionaliza el numerador
2√7-5 ÷ √3

2√7-5
_____
√3

Answer 1

$\frac{2 \sqrt{7} -5}{ \sqrt{3} }= \frac{(2 \sqrt{7} -5) \sqrt{3} }{ \sqrt{3}. \sqrt{3} } = \frac{2 \sqrt{21} -5 \sqrt{3} }{ \sqrt{9} } = \frac{2 \sqrt{21} -5 \sqrt{3} }{ 3 }$