Question

Найдите значение выражения √392/√8

Answer 1

$frac{ sqrt{392} }{ sqrt{8} } = frac{ sqrt{4 times 98} }{ sqrt{4 times 2} } = frac{2 sqrt{98} }{2 sqrt{2} } = frac{ sqrt{98} }{ sqrt{2} } = frac{ sqrt{49 times 2} }{ sqrt{2} } = frac{7 sqrt{2} }{ sqrt{2} } = 7$

Answer 2

√392/√8=√(392/8)=√49=7