11x^2+55x=0

解

11 x^{2} + 55 x = 0

x = 0, x = - 5

解答ステップ

11 x^{2} + 55 x = 0

解くとthe二次式

x_{1, 2} = \frac{- 55 \pm 5 5 ^{2} - 4 \cdot 11 \cdot 0}{2 \cdot 11}

5 5^{2} - 4 \cdot 11 \cdot 0 = 55

x_{1, 2} = \frac{- 55 \pm 55}{2 \cdot 11}

解を分離する

x_{1} = \frac{- 55 + 55}{2 \cdot 11}, x_{2} = \frac{- 55 - 55}{2 \cdot 11}

x = \frac{- 55 + 55}{2 \cdot 11} : 0

x = \frac{- 55 - 55}{2 \cdot 11} : - 5

二次equationの解:

x = 0, x = - 5