-x^2+6x+16=0

解

- x^{2} + 6 x + 16 = 0

x = - 2, x = 8

解答ステップ

- x^{2} + 6 x + 16 = 0

解くとthe二次式

x_{1, 2} = \frac{- 6 \pm 6 ^{2} - 4 ( - 1 ) \cdot 16}{2 ( - 1 )}

6^{2} - 4 (- 1) \cdot 16 = 10

x_{1, 2} = \frac{- 6 \pm 10}{2 ( - 1 )}

解を分離する

x_{1} = \frac{- 6 + 10}{2 ( - 1 )}, x_{2} = \frac{- 6 - 10}{2 ( - 1 )}

x = \frac{- 6 + 10}{2 ( - 1 )} : - 2

x = \frac{- 6 - 10}{2 ( - 1 )} : 8

二次equationの解:

x = - 2, x = 8