Question

resolva equações do 2 grau

2X2 -8 x +6=0 ?

Answer 1

2x² - 8 + 6 = 0

$ax + bx + c = 0 \\\\ x = \frac{-b \pm \sqrt{b^{2} - 4ac} }{2a} \\\\ x = \frac{-(-8) \pm \sqrt{(-8)^{2} - 4 \cdot 2 \cdot 6}}{2 \cdot 2} \\\\ x = \frac{8 \pm \sqrt{64 - 48}}{4} \\\\ x = \frac{8 \pm \sqrt{16}}{4} \\\\ x' = \frac{8 + 4}{4} = 3 \\\\ x'' = \frac{8 - 4}{4} = 1$

S = {3, 1}