Question

x2-8x+12=0 rais bi quadrada

Answer 1

x² - 8x + 12 = 0

$\displaystyle \mathsf{ \Delta = {( - 8)}^{2} - 4.1.12} \\ \displaystyle \mathsf{ \Delta = 64 - 48} \\ \displaystyle \mathsf{ \Delta = 16}$

$\displaystyle \mathsf{x = \frac{8 \pm \: 4}{2}} \\ \displaystyle \mathsf{x = 6 \: ou \: x = 2}$