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受欢迎的代数 >

6x^2+23x=-7

解答

6 x^{2} + 23 x = - 7

解答

x = - \frac{1}{3}, x = - \frac{7}{2}

+1

十进制

x = - 0.33333 \dots, x = - 3.5

求解步骤

6 x^{2} + 23 x = - 7

将

7

para o lado esquerdo

6 x^{2} + 23 x + 7 = 0

使用求根公式求解

x_{1, 2} = \frac{- 23 \pm 2 3 ^{2} - 4 \cdot 6 \cdot 7}{2 \cdot 6}

2 3^{2} - 4 \cdot 6 \cdot 7 = 19

x_{1, 2} = \frac{- 23 \pm 19}{2 \cdot 6}

将解分隔开

x_{1} = \frac{- 23 + 19}{2 \cdot 6}, x_{2} = \frac{- 23 - 19}{2 \cdot 6}

x = \frac{- 23 + 19}{2 \cdot 6} : - \frac{1}{3}

x = \frac{- 23 - 19}{2 \cdot 6} : - \frac{7}{2}

二次方程组的解是:

x = - \frac{1}{3}, x = - \frac{7}{2}

作图

流行的例子

y^{2} - y - 2 y = 0

solvefor x,y^2-x^2+1=50

so l v e f or x, y^{2} - x^{2} + 1 = 50

solvefor x,x^2+2x+1=m^2

so l v e f or x, x^{2} + 2 x + 1 = m^{2}

- 3 s^{2} - 12 s - 11 = 0

x^{2} + 36 = - 14 x