-5x^2+525x-13500=0

解

- 5 x^{2} + 525 x - 13500 = 0

x = 45, x = 60

解答ステップ

- 5 x^{2} + 525 x - 13500 = 0

解くとthe二次式

x_{1, 2} = \frac{- 525 \pm 52 5 ^{2} - 4 ( - 5 ) ( - 13500 )}{2 ( - 5 )}

52 5^{2} - 4 (- 5) (- 13500) = 75

x_{1, 2} = \frac{- 525 \pm 75}{2 ( - 5 )}

解を分離する

x_{1} = \frac{- 525 + 75}{2 ( - 5 )}, x_{2} = \frac{- 525 - 75}{2 ( - 5 )}

x = \frac{- 525 + 75}{2 ( - 5 )} : 45

x = \frac{- 525 - 75}{2 ( - 5 )} : 60

二次equationの解:

x = 45, x = 60