Question

obrigada a quem pude me ajuda​

Answer 1

Explicação passo a passo:

$a)~~{15\sqrt{5} \over\sqrt{5} .\sqrt{5} }={15\sqrt{5} \over5}=3\sqrt{5} \\ \\ \\ b)~~{21\sqrt{7} \over\sqrt{7} .\sqrt{7} }={21\sqrt{7} \over7}=3\sqrt{7}$

$c)~~{3\sqrt{11} \over\sqrt{11} .\sqrt{11} }={3\sqrt{11} \over11}\\ \\ \\ d)~~{2\sqrt{3} \over\sqrt{3} .\sqrt{3} }={2\sqrt{3} \over3}$

$e)~~{3\sqrt{2} \over\sqrt{2} .\sqrt{2} }={3\sqrt{2} \over2}\\ \\ \\ f)~~{10\sqrt{5} \over\sqrt{5} .\sqrt{5} }={10\sqrt{5} \over5}=2\sqrt{5} \\ \\ \\ g)~~{4\sqrt{6} \over\sqrt{6} .\sqrt{6} }={4\sqrt{6} \over6}={2\sqrt{6} \over3}$