[tex]2x²-32=0 \: (2° grau \: incompleta)[/tex]
[tex]x {}^{2} - 16 = 0[/tex]
[tex]x {}^{2} = 16[/tex]
[tex]x {}^{2} = \sqrt{16} [/tex]
[tex]x = 4 \: ±[/tex]
[tex]x_{1} = - 4[/tex]
[tex]x_{2} = 4[/tex]
