m^2+2m=0

解

m^{2} + 2 m = 0

m = 0, m = - 2

解答ステップ

m^{2} + 2 m = 0

解くとthe二次式

m_{1, 2} = \frac{- 2 \pm 2 ^{2} - 4 \cdot 1 \cdot 0}{2 \cdot 1}

2^{2} - 4 \cdot 1 \cdot 0 = 2

m_{1, 2} = \frac{- 2 \pm 2}{2 \cdot 1}

解を分離する

m_{1} = \frac{- 2 + 2}{2 \cdot 1}, m_{2} = \frac{- 2 - 2}{2 \cdot 1}

m = \frac{- 2 + 2}{2 \cdot 1} : 0

m = \frac{- 2 - 2}{2 \cdot 1} : - 2

二次equationの解:

m = 0, m = - 2