Question

equação do 2 grau 3x ao quadrado -8x=0

Answer 1

Caso queira determinar 'x':

$\text{Caso queira determinar 'x':}\\\\3x^2-8x=0\\\\x=\dfrac{-(-8)\pm\sqrt{(-8)^2-4\cdot3\cdot0}}{2\cdot3}\\\\x=\dfrac{8\pm\sqrt{64}}{6}\\\\x=\dfrac{8\pm8}{6}\left\langle\begin{matrix}x'=\boxed{\dfrac{8}{3}}\\\\\boxed{x''=0}\end{matrix}\right\\\\\\\\\\\boxed{\boxed{S=\left\{0,\ \dfrac{8}{3}\right\}}}$

Answer 2

3x² - 8x = 0
x(3x - 8) = 0
x = 0
3x - 8 = 0
3x = 8
  x = 8/3
Resp: x = 0 ou x = 8/3