Question

resolva x elevado ao quadrado +3x-10=0 pela fórmula de Bhaskara​

Answer 1

Ola!!

Têm-se a equação:

x²+3x—10=0

a=1 ; b=3 e c=—10

Bhaskara:

$\large\boxed{\boxed{{x_{1,2}=\frac{-b\pm\sqrt{b^2-4*a*c}}{2*a}}}}}}$

$x_{1,2}=\frac{-3\pm\sqrt{3^2-4*1*(-10)}}{2*1}$

$x_{1,2}=\frac{-3\pm\sqrt{9+40}}{2}$

$x_{1,2}=\frac{-3\pm\sqrt{49}}{2}$

$x_{1,2}=\frac{-3\pm\:7}{2}$

${\color{blue}{x_{1}=\frac{-3+7}{2}=\frac{4}{2}=2}}$

${\color{blue}{x_{2}=\frac{-3-7}{2}=\frac{-10}{2}=-5}}$

$s:\{-5;2\}$

Dúvidas??Comente!