Question

x1 e x2 de 5x(X)+3x-2

Answer 1

Resposta:

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

$5 {x}^{2} + 3x - 2 = 0 \\ x = \frac{ - 3 + - \sqrt{9 - 4 \times 5 \times ( - 2)} }{2 \times 5} \\ x = \frac{ - 3 + - 7}{10} \\ x_{1} = \frac{ - 3 + 7}{10} = \frac{4}{10} = \frac{2}{5} \\ x_{2} = \frac{ - 3 - 7}{10} = \frac{ - 10}{10} = - 1$