1) Calcule as raízes das equações a seguir SEM utilizar a fórmula resolutiva(fórmula de Bhaskara)


a) [tex]-2x^{2} +128=0[/tex]

b) [tex]x^{2} -4x=0[/tex]

c) [tex]3x^{2} +27x=0[/tex]

d) [tex]-5x^{2} +10x=0[/tex]
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