Tìm x biết

1) \(\sqrt{x-1}=3\)

2) \(\sqrt{x}-\sqrt{3}=0\)

3) \(4-5\sqrt{x}=-1\)

4) \(\sqrt{x}\left(\sqrt{ }x-1\right)=0\)

5)\(\left(\sqrt{ }x-2\right)\left(\sqrt{ }x+3\right)=0\)

6) \(\left(\sqrt{ }x+1\right)\left(\sqrt{ }x+2\right)=0\)

7) \(^{^{ }}x2+2\sqrt{2x}+2=1\)