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受欢迎的代数 >

-3x^2+18x=0

解答

- 3 x^{2} + 18 x = 0

解答

x = 0, x = 6

求解步骤

- 3 x^{2} + 18 x = 0

使用求根公式求解

x_{1, 2} = \frac{- 18 \pm 1 8 ^{2} - 4 ( - 3 ) \cdot 0}{2 ( - 3 )}

1 8^{2} - 4 (- 3) \cdot 0 = 18

x_{1, 2} = \frac{- 18 \pm 18}{2 ( - 3 )}

将解分隔开

x_{1} = \frac{- 18 + 18}{2 ( - 3 )}, x_{2} = \frac{- 18 - 18}{2 ( - 3 )}

x = \frac{- 18 + 18}{2 ( - 3 )} : 0

x = \frac{- 18 - 18}{2 ( - 3 )} : 6

二次方程组的解是:

x = 0, x = 6

作图

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