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受欢迎的代数 >

8x^2+36x=0

解答

8 x^{2} + 36 x = 0

解答

x = 0, x = - \frac{9}{2}

+1

十进制

x = 0, x = - 4.5

求解步骤

8 x^{2} + 36 x = 0

使用求根公式求解

x_{1, 2} = \frac{- 36 \pm 3 6 ^{2} - 4 \cdot 8 \cdot 0}{2 \cdot 8}

3 6^{2} - 4 \cdot 8 \cdot 0 = 36

x_{1, 2} = \frac{- 36 \pm 36}{2 \cdot 8}

将解分隔开

x_{1} = \frac{- 36 + 36}{2 \cdot 8}, x_{2} = \frac{- 36 - 36}{2 \cdot 8}

x = \frac{- 36 + 36}{2 \cdot 8} : 0

x = \frac{- 36 - 36}{2 \cdot 8} : - \frac{9}{2}

二次方程组的解是:

x = 0, x = - \frac{9}{2}

作图

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