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9= 3^2
9=-3^2 las soluciones son 3 y -3
x² = 9
x = √9 Recuerda que todo numero diferente de cero tiene 2
raices una positiva y otra negativa
x = 3 Porque (3)(3) = 9
o
x = - √9
x = - 3 Porque ( - 3)( - 3) = 9
Solucion
(3 , - 3)