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受欢迎的代数 >

-3m^2+6m+24=0

解答

- 3 m^{2} + 6 m + 24 = 0

解答

m = - 2, m = 4

求解步骤

- 3 m^{2} + 6 m + 24 = 0

使用求根公式求解

m_{1, 2} = \frac{- 6 \pm 6 ^{2} - 4 ( - 3 ) \cdot 24}{2 ( - 3 )}

6^{2} - 4 (- 3) \cdot 24 = 18

m_{1, 2} = \frac{- 6 \pm 18}{2 ( - 3 )}

将解分隔开

m_{1} = \frac{- 6 + 18}{2 ( - 3 )}, m_{2} = \frac{- 6 - 18}{2 ( - 3 )}

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

m = \frac{- 6 - 18}{2 ( - 3 )} : 4

二次方程组的解是:

m = - 2, m = 4

作图

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