-x^2+70x-600=0

解

- x^{2} + 70 x - 600 = 0

x = 10, x = 60

解答ステップ

- x^{2} + 70 x - 600 = 0

解くとthe二次式

x_{1, 2} = \frac{- 70 \pm 7 0 ^{2} - 4 ( - 1 ) ( - 600 )}{2 ( - 1 )}

7 0^{2} - 4 (- 1) (- 600) = 50

x_{1, 2} = \frac{- 70 \pm 50}{2 ( - 1 )}

解を分離する

x_{1} = \frac{- 70 + 50}{2 ( - 1 )}, x_{2} = \frac{- 70 - 50}{2 ( - 1 )}

x = \frac{- 70 + 50}{2 ( - 1 )} : 10

x = \frac{- 70 - 50}{2 ( - 1 )} : 60

二次equationの解:

x = 10, x = 60