Question

quais as raízes da equação x²-7x+5=0​

Answer 1

x² - 7x + 5 = 0

∆ = (-7)² - 4.1.5

∆ = 49 - 20

∆ = 29

$x = \frac{ - ( - 7) + - \sqrt{29} }{2 \times 1}$

$x = \frac{7 + - \sqrt{29} }{2}$

${x}^{1} = \frac{7 - \sqrt{29} }{2}$

${x}^{2} = \frac{7 + \sqrt{29} }{2}$