Matemática
MichellyMiguel
1

            calcule a raiz  f(x)=x² +5x+6

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(1) Respostas
SilvanaRodrigues

f(x)=x²+5x+6 a=1 b=5 c=6 [latex]x= \frac{-b\pm \sqrt{b^2-4ac} }{2a} = \frac{-5\pm \sqrt{25-24} }{2} = \frac{-5\pm \sqrt{1} }{2}= [/latex] [latex]x= \frac{-5\pm1}{2} [/latex] [latex]x'= \frac{-5+1}{2} =- \frac{4}{2} =-2[/latex] [latex]x"= \frac{-5-1}{2} =- \frac{6}{2} =-3[/latex] S={-3,-2}

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