-3x^2+12x+36=0

解

- 3 x^{2} + 12 x + 36 = 0

x = - 2, x = 6

解答ステップ

- 3 x^{2} + 12 x + 36 = 0

解くとthe二次式

x_{1, 2} = \frac{- 12 \pm 1 2 ^{2} - 4 ( - 3 ) \cdot 36}{2 ( - 3 )}

1 2^{2} - 4 (- 3) \cdot 36 = 24

x_{1, 2} = \frac{- 12 \pm 24}{2 ( - 3 )}

解を分離する

x_{1} = \frac{- 12 + 24}{2 ( - 3 )}, x_{2} = \frac{- 12 - 24}{2 ( - 3 )}

x = \frac{- 12 + 24}{2 ( - 3 )} : - 2

x = \frac{- 12 - 24}{2 ( - 3 )} : 6

二次equationの解:

x = - 2, x = 6