Question

(√112 - 6× √343)/ √112

/ -черта деления

Answer 1

$\frac{ \sqrt{112}-6 \sqrt{343} }{ \sqrt{112} } = \frac{ \sqrt{16*7}-6 \sqrt{49*7} }{ \sqrt{16*7} }= \frac{ 4\sqrt{7}-6*7 \sqrt{7} }{4 \sqrt{7} }= \frac{ 4\sqrt{7}-42 \sqrt{7} }{4 \sqrt{7} }= \frac{ -38\sqrt{7} }{4 \sqrt{7} }=$

$=- \frac{19}{2} =-9 ,5$