Question

Решите только номер5

Answer 1

$frac{15 sqrt{8} }{ sqrt{18} } = frac{15*2* sqrt{2} }{3 sqrt{2} } = frac{30 sqrt{2} }{3 sqrt{2} } = 10$

Answer 2

$frac{15 sqrt{8} }{ sqrt{18} } = frac{15 sqrt{4*2} }{ sqrt{9*2} }= frac{15*2* sqrt{2} }{3* sqrt{2} } = frac{15*2}{3} = frac{30}{3} =10$