Question

me ajudem a resolver x²-5x+6=0​

Answer 1

Resposta:

S = { 2 ; 3 }

Explicação passo-a-passo:

x² - 5x + 6 = 0

$x = \frac{ - b + - \sqrt{ {b}^{2} - 4ac} }{2a}$

$x = \frac{ - ( - 5) + - \sqrt{ {( - 5)}^{2} - 4 \times 1 \times 6} }{2 \times 1}$

$x = \frac{5 + - \sqrt{25 - 24} }{2}$

$x = \frac{5 + - \sqrt{1} }{2}$

$x = \frac{5 + - 1}{2}$

$x1 = \frac{5 - 1}{2}$

$x1 = \frac{4}{2}$

x' = 2

$x2 = \frac{5 + 1}{2}$

$x2 = \frac{6}{2}$

x'' = 3