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Das equações abaixo, quais são do 2° grau e, nelas, escreva na forma geral indicando seus coeficientes: a.

Kamilyreis

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Das equações abaixo, quais são do 2° grau e, nelas, escreva na forma geral indicando seus coeficientes: a.
b.
c.
d.

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{x}^{2} + x . (1 - x) + 7 = 2x
(x + 3).(2x - 1) = 4x - 3
{x}^{2}.(5 - x) = 4
(x + 2 )^{2} - 4 = (2 - 3x)^{2}

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