[tex] x^{2} =0 \\ x=0[/tex]
[tex] x^{2} =1 \\ x= \sqrt{1} , \sqrt{-1} [/tex]
[tex] x^{2} =49 \\ x=7[/tex]
[tex] x^{2} =16 \\ x=4[/tex]
[tex] x^{2} =25 \\ x=5[/tex]
[tex] x^{2} = \sqrt{ \frac{16}{25} } \\ x= \frac{4}{5} [/tex]
[tex]2 x^{2} =32 \\ x^{2} =32|2 \\ x^{2} =16 \\ x=4[/tex]
[tex]2 x^{2} =50 \\ x^{2} =50|2 \\ x^{2} =25 \\ x=5[/tex]
