18x^2-504x+2646=0

解

18 x^{2} - 504 x + 2646 = 0

x = 21, x = 7

解答ステップ

18 x^{2} - 504 x + 2646 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 504 ) \pm ( - 504 ) ^{2} - 4 \cdot 18 \cdot 2646}{2 \cdot 18}

(- 504)^{2} - 4 \cdot 18 \cdot 2646 = 252

x_{1, 2} = \frac{- ( - 504 ) \pm 252}{2 \cdot 18}

解を分離する

x_{1} = \frac{- ( - 504 ) + 252}{2 \cdot 18}, x_{2} = \frac{- ( - 504 ) - 252}{2 \cdot 18}

x = \frac{- ( - 504 ) + 252}{2 \cdot 18} : 21

x = \frac{- ( - 504 ) - 252}{2 \cdot 18} : 7

二次equationの解:

x = 21, x = 7