-x^2+10x=25

解

- x^{2} + 10 x = 25

x = 5

解答ステップ

- x^{2} + 10 x = 25

25

を左側に移動します

- x^{2} + 10 x - 25 = 0

解くとthe二次式

x_{1, 2} = \frac{- 10 \pm 1 0 ^{2} - 4 ( - 1 ) ( - 25 )}{2 ( - 1 )}

1 0^{2} - 4 (- 1) (- 25) = 0

x_{1, 2} = \frac{- 10 \pm 0}{2 ( - 1 )}

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

\frac{- 10}{2 ( - 1 )} = 5

x = 5

二次equationの解:

x = 5