Question

$3x^{2} -3x-2=0$

Answer 1

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$3x^2-3x-2=0$

$Onde:$

$a=3;b=-3;c=-2$

lembrando que:

$\Delta=b^2-4×a×c$

$\Delta=(-3)^2-4×3×(-2)$

$\Delta=9+24$

$\Delta=33$

$x_{1}=\frac{-(-b)+\sqrt{\Delta}}{2.a}}$

$X_{1}=\frac{-(-3)+\sqrt{33}}{2.3}}$

$x_{1}=\frac{3+\sqrt{33}}{6}$

$x_{2}=\frac{-(-b)-\sqrt{\Delta}}{2.a}$

$x_{2}=\frac{-(-3)-\sqrt{33}}{2.3}$


$X_{2}=-\frac{3-\sqrt{33}}{6}$

06.04.2019