-12x^2-36x=0

解

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

x = - 3, x = 0

解答ステップ

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

解くとthe二次式

x_{1, 2} = \frac{- ( - 36 ) \pm ( - 36 ) ^{2} - 4 ( - 12 ) \cdot 0}{2 ( - 12 )}

(- 36)^{2} - 4 (- 12) \cdot 0 = 36

x_{1, 2} = \frac{- ( - 36 ) \pm 36}{2 ( - 12 )}

解を分離する

x_{1} = \frac{- ( - 36 ) + 36}{2 ( - 12 )}, x_{2} = \frac{- ( - 36 ) - 36}{2 ( - 12 )}

x = \frac{- ( - 36 ) + 36}{2 ( - 12 )} : - 3

x = \frac{- ( - 36 ) - 36}{2 ( - 12 )} : 0

二次equationの解:

x = - 3, x = 0