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受欢迎的代数 >

solvefor x,6x^2+6x-12=0

解答

x, 6 x^{2} + 6 x - 12 = 0

解答

x = 1, x = - 2

求解步骤

6 x^{2} + 6 x - 12 = 0

使用求根公式求解

x_{1, 2} = \frac{- 6 \pm 6 ^{2} - 4 \cdot 6 ( - 12 )}{2 \cdot 6}

6^{2} - 4 \cdot 6 (- 12) = 18

x_{1, 2} = \frac{- 6 \pm 18}{2 \cdot 6}

将解分隔开

x_{1} = \frac{- 6 + 18}{2 \cdot 6}, x_{2} = \frac{- 6 - 18}{2 \cdot 6}

x = \frac{- 6 + 18}{2 \cdot 6} : 1

x = \frac{- 6 - 18}{2 \cdot 6} : - 2

二次方程组的解是:

x = 1, x = - 2

作图

流行的例子

x^{2} - 22 x + 21 = 0

2 x^{2} + 12 x + 14 = 0

(2 x - 5) (x + 7) = 0

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so l v e f or x, x^{2} y + x^{2} - x y^{2} + x y + 2 x = 0