3m^2+30m+75=0

解

3 m^{2} + 30 m + 75 = 0

m = - 5

解答ステップ

3 m^{2} + 30 m + 75 = 0

解くとthe二次式

m_{1, 2} = \frac{- 30 \pm 3 0 ^{2} - 4 \cdot 3 \cdot 75}{2 \cdot 3}

3 0^{2} - 4 \cdot 3 \cdot 75 = 0

m_{1, 2} = \frac{- 30 \pm 0}{2 \cdot 3}

m = \frac{- 30}{2 \cdot 3}

\frac{- 30}{2 \cdot 3} = - 5

m = - 5

二次equationの解:

m = - 5