colin-moore_60b9c80f3adf2
colin-moore_60b9c80f3adf2
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X^4 - 80 one = 0 X^4 = 80 one Fazendo x^2 = Y, Temos: Y^2 = 80 one Y = + - 80 one^(a million/2) Y = + - 9 Daí: X^2 = +9 ou X^2 = - 9(Não serve no conjunto dos números reais) X = + - 9^(a million/2) X = + - 3 Resposta: C