Question

Giúp mk với ạ Câu 2

Answer 1

2.1) \(\left\{{}\begin{matrix}2x+\dfrac{1}{\sqrt{y}}=3\left(1\right)\\x-\dfrac{1}{\sqrt{y}}=0\left(2\right)\end{matrix}\right.\left(y\ne0\right)\)

Lấy \(\left(1\right)+\left(2\right)\Rightarrow3x=3\Rightarrow x=1\Rightarrow\dfrac{1}{\sqrt{y}}=1\Rightarrow y=1\)