Question

Rezilvati ecuatia va rog frumos
3x^2-6x=0 de gradul 2

Answer 1

$3 {x}^{2} - 6x = 0$

$a = 3$

$b = - 6$

$c = 0$

$\Delta = {b}^{2} - 4ac$

$\Delta = {( - 6)}^{2} - 4 \times 3 \times 0$

$\Delta = 36 > 0 =>\exists \: \: x_{1} \neq x_{2} \: \in \: \mathbb{R}$

$x_{1,2}=\frac{-b\pm\sqrt{\Delta}}{2a}$

$x_{1,2}=\frac{-( - 6)\pm\sqrt{36}}{2 \times 3}$

$x_{1,2}=\frac{6\pm6}{6}$

$x_{1}=\frac{6 + 6}{6} = \frac{12}{6} = 2$

$x_{2}=\frac{6 - 6}{6} = \frac{0}{6} = 0$

Answer 2

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