136y^2+36y-681=0

解

136 y^{2} + 36 y - 681 = 0

y = \frac{- 9 + 23235}{68}, y = - \frac{9 + 23235}{68}

十進法表記

y = 2.10926 \dots, y = - 2.37397 \dots

解答ステップ

136 y^{2} + 36 y - 681 = 0

解くとthe二次式

y_{1, 2} = \frac{- 36 \pm 3 6 ^{2} - 4 \cdot 136 ( - 681 )}{2 \cdot 136}

3 6^{2} - 4 \cdot 136 (- 681) = 423235

y_{1, 2} = \frac{- 36 \pm 4 23235}{2 \cdot 136}

解を分離する

y_{1} = \frac{- 36 + 4 23235}{2 \cdot 136}, y_{2} = \frac{- 36 - 4 23235}{2 \cdot 136}

y = \frac{- 36 + 4 23235}{2 \cdot 136} : \frac{- 9 + 23235}{68}

y = \frac{- 36 - 4 23235}{2 \cdot 136} : - \frac{9 + 23235}{68}

二次equationの解:

y = \frac{- 9 + 23235}{68}, y = - \frac{9 + 23235}{68}