Question

Номер 535 очень срочно

Answer 1

$frac{a}{3 sqrt{5}}= frac{a* sqrt{5} }{3 sqrt{5} * sqrt{5}}= frac{a sqrt{5}}{3*5}= frac{a sqrt{5} }{15}$

$frac{4b}{5 sqrt{c}}= frac{4b sqrt{c} }{5 sqrt{c} sqrt{c}}= frac{4b sqrt{c} }{5c}$

$frac{6}{ sqrt{a+b} }= frac{6sqrt{a+b}}{(sqrt{a+b})(sqrt{a+b})}= frac{6sqrt{a+b}}{a+b}$

$frac{4}{sqrt{x-y}}= frac{4sqrt{x-y}}{(sqrt{x-y})(sqrt{x-y})}= frac{4sqrt{x-y}}{x-y}$

$frac{16}{ sqrt{a}+ sqrt{6}}= frac{16(sqrt{a}+ sqrt{6})}{(sqrt{a}+ sqrt{6})^2}= frac{16(sqrt{a}+ sqrt{6})}{a+2sqrt{a}sqrt{6}+6}$

$frac{a}{ sqrt{c}-4 }= frac{a(sqrt{c}-4)}{(sqrt{c}-4)(sqrt{c}-4)}= frac{a(sqrt{c}-4)}{c-8 sqrt{c}+16}$

Answer 2

Спасибо