Question

Me ajudem por favor equação do segundo grau " cálculo"!
${x}^{2} - 10 \times + 24 = 0$

Answer 1

Bom dia

x² - 10x + 24 = 0

delta
d² = 100 - 96 = 4
d = 2

x1 = (10 + 2)/2 = 6
x2 = (10 - 2)/2 = 4

outro método

x² - 10x = -24
x² - 10x + 25 = -24 + 25
(x - 5)² = 1

x1 - 5 = 1
x1 = 6

x2 - 5 = -1
x2 = 4

Answer 2

Aplicando Baskhara, temos:

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

$x= \frac{-(-10)\pm \sqrt{(-10)^2-4.1.24} }{2.1} =\ \textgreater \ x = \frac{10\pm \sqrt{100-96} }{2} =\ \textgreater \ x= \frac{10\pm \sqrt{4} }{2} =\ \textgreater \ \\ \\ x= \frac{10\pm2}{2} =\ \textgreater \ x'= \frac{10+2}{2}= \frac{12}{2} = 6 \\ \\ x''= \frac{10-2}{2} = \frac{8}{2} =4$