m^2+3m+2=0

解

m^{2} + 3 m + 2 = 0

m = - 1, m = - 2

解答ステップ

m^{2} + 3 m + 2 = 0

解くとthe二次式

m_{1, 2} = \frac{- 3 \pm 3 ^{2} - 4 \cdot 1 \cdot 2}{2 \cdot 1}

3^{2} - 4 \cdot 1 \cdot 2 = 1

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

解を分離する

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

m = \frac{- 3 + 1}{2 \cdot 1} : - 1

m = \frac{- 3 - 1}{2 \cdot 1} : - 2

二次equationの解:

m = - 1, m = - 2