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受欢迎的代数 >

7x^2-35x=0

解答

7 x^{2} - 35 x = 0

解答

x = 5, x = 0

求解步骤

7 x^{2} - 35 x = 0

使用求根公式求解

x_{1, 2} = \frac{- ( - 35 ) \pm ( - 35 ) ^{2} - 4 \cdot 7 \cdot 0}{2 \cdot 7}

(- 35)^{2} - 4 \cdot 7 \cdot 0 = 35

x_{1, 2} = \frac{- ( - 35 ) \pm 35}{2 \cdot 7}

将解分隔开

x_{1} = \frac{- ( - 35 ) + 35}{2 \cdot 7}, x_{2} = \frac{- ( - 35 ) - 35}{2 \cdot 7}

x = \frac{- ( - 35 ) + 35}{2 \cdot 7} : 5

x = \frac{- ( - 35 ) - 35}{2 \cdot 7} : 0

二次方程组的解是:

x = 5, x = 0

作图

流行的例子

x^{2} + (\frac{1}{2})^{2} = 1

4 x^{2} - 5 x + 7 = 0

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