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人気のある代数 >

-7x^2+x+6=0

解

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

解

x = - \frac{6}{7}, x = 1

+1

十進法表記

x = - 0.85714 \dots, x = 1

解答ステップ

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

解くとthe二次式

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

1^{2} - 4 (- 7) \cdot 6 = 13

x_{1, 2} = \frac{- 1 \pm 13}{2 ( - 7 )}

解を分離する

x_{1} = \frac{- 1 + 13}{2 ( - 7 )}, x_{2} = \frac{- 1 - 13}{2 ( - 7 )}

x = \frac{- 1 + 13}{2 ( - 7 )} : - \frac{6}{7}

x = \frac{- 1 - 13}{2 ( - 7 )} : 1

二次equationの解:

x = - \frac{6}{7}, x = 1

グラフ

人気の例

s^{2} + 100 = 0

x (x + 10) = - 34

solvefor x,ax^2+bx+c=o

so l v e f or x, a x^{2} + b x + c = o

log_{10}(3)(x^2-6)-log_{10}(3)(x+6)=0

lo g_{10} (3) (x^{2} - 6) - lo g_{10} (3) (x + 6) = 0

- 4 x^{2} - 5 x - 3 = 0