Question

Raizes das equação do 2 ° grau
3x²-9x=0

Answer 1

$-(-9) \frac{+}{-} \sqrt{- 9^{2} -4 . 3 . 0 } /2.3$
$9\frac{+}{-} \sqrt{81} /6$
$9 \frac{+}{-} 9/6$

x'= 9 + 9 /6
18/6 = 3

x''= 9 - 9 /6
0/6 
x''=0

Answer 2

3x² - 9x = 0
x(3x - 9) = 0
x = 0

3x - 9 = 0
3x = 9
x = 9/3
x = 3

R.: x = 0 e x = 3