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受欢迎的代数 >

quadraticformula 6x^2+x-5=0

解答

6 x^{2} + x - 5 = 0

解答

x = \frac{5}{6}, x = - 1

+1

十进制

x = 0.83333 \dots, x = - 1

求解步骤

6 x^{2} + x - 5 = 0

使用求根公式求解

x_{1, 2} = \frac{- 1 \pm 1 ^{2} - 4 \cdot 6 ( - 5 )}{2 \cdot 6}

1^{2} - 4 \cdot 6 (- 5) = 11

x_{1, 2} = \frac{- 1 \pm 11}{2 \cdot 6}

将解分隔开

x_{1} = \frac{- 1 + 11}{2 \cdot 6}, x_{2} = \frac{- 1 - 11}{2 \cdot 6}

x = \frac{- 1 + 11}{2 \cdot 6} : \frac{5}{6}

x = \frac{- 1 - 11}{2 \cdot 6} : - 1

二次方程组的解是:

x = \frac{5}{6}, x = - 1

作图

流行的例子

- x - x^{2} = 0

6 x^{2} - 35 = 11 x

solvefor y,4x^2-y^2=0

so l v e f or y, 4 x^{2} - y^{2} = 0

a^{2} + 9 = 9

-4.9t^2+18.24t+0.8=-1.43t+4.26

- 4.9 t^{2} + 18.24 t + 0.8 = - 1.43 t + 4.26