Question

simplificati raportul 2√7-7/√7

Answer 1

$2 \sqrt{7} - \frac{7}{ \sqrt{7} } =2 \sqrt{7} - \frac{7 \sqrt{7} }{7} = 2 \sqrt{7} - \sqrt{7} = \sqrt{7}$

Answer 2

2√7-$\frac{7}{ \sqrt{7} }$. Se amplifica 2√7 cu √7 si obtinem:
2√7*√7-7=2*7-7=14-7=7.