Question

equacao do 2 grau 3x elevado a 2-7x+2

Answer 1

$\mathsf{3x^2-7x+2=0}}\\\\ \mathsf{x = -b~\pm~\dfrac{\sqrt{b^{2}-4~\cdot~a~\cdot~c}}{2~\cdot~a}}}\\\\\ \mathsf{x = 7~\pm~\dfrac{\sqrt{(-7)^{2}-4~\cdot~3~\cdot~2}}{2~\cdot~3}}}\\\\\ \mathsf{x = 7~\pm~\dfrac{\sqrt{49-24}}{6}}}}\\\\\ \mathsf{x = 7~\pm~\dfrac{\sqrt{25}}{6}}}\\\\\ \mathsf{x = 7~\pm~\dfrac{5}{6}}}\\\\\\ \mathsf{x' = \dfrac{7+5}{6}}}\\\\\ \mathsf{x' = \dfrac{12}{6}}}~\therefore~ \mathsf{\large\boxed{\boxed{\boxed{x'=2.}}}}}}}}}}\\\\\\ \mathsf{x'' = \dfrac{7-5}{6}}\\\\\\ \mathsf{x'' = \dfrac{1}{3}}$

Espero que te ajude. :-).