Question

Racionalize :

a - 8√7 / 5√2

Answer 1

$\frac{-8 \sqrt{7} }{5 \sqrt{2} }= \frac{-8 \sqrt{7} }{5 \sqrt{2} }. \frac{ \sqrt{2} }{ \sqrt{2} }= \frac{-4 \sqrt{14} }{5}$

Answer 2

$\frac{-8 \sqrt{7} }{5 \sqrt{2} }= \frac{-8 \sqrt{7} }{5 \sqrt{2} }. \frac{ \sqrt{2} }{ \sqrt{2} }= \frac{-4 \sqrt{14} }{5}$