x^2-10000x+21000000=0

解

x^{2} - 10000 x + 21000000 = 0

x = 7000, x = 3000

解答ステップ

x^{2} - 10000 x + 21000000 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 10000 ) \pm ( - 10000 ) ^{2} - 4 \cdot 1 \cdot 21000000}{2 \cdot 1}

(- 10000)^{2} - 4 \cdot 1 \cdot 21000000 = 4000

x_{1, 2} = \frac{- ( - 10000 ) \pm 4000}{2 \cdot 1}

解を分離する

x_{1} = \frac{- ( - 10000 ) + 4000}{2 \cdot 1}, x_{2} = \frac{- ( - 10000 ) - 4000}{2 \cdot 1}

x = \frac{- ( - 10000 ) + 4000}{2 \cdot 1} : 7000

x = \frac{- ( - 10000 ) - 4000}{2 \cdot 1} : 3000

二次equationの解:

x = 7000, x = 3000