Question

x²-x-12fórmula de Bhaskara ​

Answer 1

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$x_{1},_{2}=\frac{-b±\sqrt{b^2-4.a.c}}{2.a}$

$x_{1},_{2}=\frac{-(-1)±\sqrt{(-1)^2-4.1.(-12)}}{2.1}$

$x_{1},_{2}=\frac{1±\sqrt{1+48}}{2}$

$x_{1},_{2}=\frac{1±\sqrt{49}}{2}$

$x_{1}=\frac{1+7}{2}$

$x_{1}=\frac{8}{2}$

$x_{1}=4$

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$x_{2}=\frac{1-7}{2}$

$x_{2}=\frac{-6}{2}$

$x_{2}=-3$

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