Question

determine a solução da equacao 5x²-45x=0​

Answer 1

$5x²-45x=0$

$x = \frac{ - ( - 45) + - \sqrt{( - 45) {}^{2} - 4 \times 5 \times 0} }{2 \times 5 }$

$\frac{45 + - \sqrt{( - 45) {}^{2} } }{10}$

$x = \frac{45 \: + - \: 45}{10}$

$x = \frac{45 + 45}{10} = 9$

$x = \frac{45 - 45}{10} = 0$

$x_{1} = 0$

$x_{2} = 9$