Resolva as equações do 2°grau,com a formula de Bhaskara.
a)[tex] x^{2} -7x-8=0[/tex]
b)[tex] x^{2} -5x-36=0[/tex]
a)[tex] x^{2} -7x-8=0[/tex]
b)[tex] x^{2} -5x-36=0[/tex]
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