-x²-x=0
[tex] - x(x + 1) = 0[/tex]
[tex]x = 0[/tex]
[tex]x + 1 = 0[/tex]
[tex]x = - 1[/tex]
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-x²-x=0
[tex] - x(x + 1) = 0[/tex]
[tex]x = 0[/tex]
[tex]x + 1 = 0[/tex]
[tex]x = 0[/tex]
[tex]x = - 1[/tex]