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受欢迎的代数 >

6x^2-26x+20=0

解答

6 x^{2} - 26 x + 20 = 0

解答

x = \frac{10}{3}, x = 1

+1

十进制

x = 3.33333 \dots, x = 1

求解步骤

6 x^{2} - 26 x + 20 = 0

使用求根公式求解

x_{1, 2} = \frac{- ( - 26 ) \pm ( - 26 ) ^{2} - 4 \cdot 6 \cdot 20}{2 \cdot 6}

(- 26)^{2} - 4 \cdot 6 \cdot 20 = 14

x_{1, 2} = \frac{- ( - 26 ) \pm 14}{2 \cdot 6}

将解分隔开

x_{1} = \frac{- ( - 26 ) + 14}{2 \cdot 6}, x_{2} = \frac{- ( - 26 ) - 14}{2 \cdot 6}

x = \frac{- ( - 26 ) + 14}{2 \cdot 6} : \frac{10}{3}

x = \frac{- ( - 26 ) - 14}{2 \cdot 6} : 1

二次方程组的解是:

x = \frac{10}{3}, x = 1

作图

流行的例子

4 x + 4 = - x^{2}

x^{2} = 6 x - 14

x = x^{2} - 2 x + 1

9 x^{2} + 10 x = 5

solvefor x,-2x^2+y^3-7y+x=0

so l v e f or x, - 2 x^{2} + y^{3} - 7 y + x = 0