3x^2+36x=0

解

3 x^{2} + 36 x = 0

x = 0, x = - 12

解答ステップ

3 x^{2} + 36 x = 0

解くとthe二次式

x_{1, 2} = \frac{- 36 \pm 3 6 ^{2} - 4 \cdot 3 \cdot 0}{2 \cdot 3}

3 6^{2} - 4 \cdot 3 \cdot 0 = 36

x_{1, 2} = \frac{- 36 \pm 36}{2 \cdot 3}

解を分離する

x_{1} = \frac{- 36 + 36}{2 \cdot 3}, x_{2} = \frac{- 36 - 36}{2 \cdot 3}

x = \frac{- 36 + 36}{2 \cdot 3} : 0

x = \frac{- 36 - 36}{2 \cdot 3} : - 12

二次equationの解:

x = 0, x = - 12