Предмет: Алгебра, автор: pmtpppm

помогите решить,пожалуйста!

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Автор ответа: sangers1959

((√x+1)/(x*√x+x+√x))/(1/(x²-√x)
Пусть √x=t ⇒
((t+1)/(t³+t²+t))/(1/(t⁴-t)=(t+1)*(t⁴-t)/(t³+t²+t)=(t+1)*t*(t³-1)/(t*(t²+t+1)=
=(t+1)*(t-1)*(t²+t+1)/(t²+t+1)=t²-1=(√x)²-1=x-1.

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