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受欢迎的代数 >

3x^2-12x+0=0

解答

3 x^{2} - 12 x + 0 = 0

解答

x = 4, x = 0

求解步骤

3 x^{2} - 12 x + 0 = 0

整理后得

3 x^{2} - 12 x = 0

使用求根公式求解

x_{1, 2} = \frac{- ( - 12 ) \pm ( - 12 ) ^{2} - 4 \cdot 3 \cdot 0}{2 \cdot 3}

(- 12)^{2} - 4 \cdot 3 \cdot 0 = 12

x_{1, 2} = \frac{- ( - 12 ) \pm 12}{2 \cdot 3}

将解分隔开

x_{1} = \frac{- ( - 12 ) + 12}{2 \cdot 3}, x_{2} = \frac{- ( - 12 ) - 12}{2 \cdot 3}

x = \frac{- ( - 12 ) + 12}{2 \cdot 3} : 4

x = \frac{- ( - 12 ) - 12}{2 \cdot 3} : 0

二次方程组的解是:

x = 4, x = 0

作图

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