Question

equaçao de 2 grau x²-5x+6=0

Answer 1

x² - 5x + 6 = 0
Delta = b² - 4ac
Delta = 25 - 4(1)(6)
Delta = 25 - 24
Delta = 1
X = (-b +- raiz delta) / 2a
X = (5 +- 1) / 2
x' = (5 + 1) / 2 = 6/2 = 3
x" = (5 - 1) / 2 = 4/2 = 2

Answer 2

$x^{2} -5x + 6 = 0$

a = 1
b = -5
c = 6

$x = \frac{-b +-\sqrt{b^{2}} - 4ac }{2a}$
$x = \frac{-(-5)+-\sqrt{(-5)^{2} - 4*1*6 }}{2*1}$
$x = \frac{5+-\sqrt{25 -24}}{2}$
$x = \frac{5+-\sqrt{1}}{2}$

x'= 5+1 / 2
x'= 3 

x"=5-1/2
x"=2