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人気のある代数 >

-12r^2-2=-4r

解

- 12 r^{2} - 2 = - 4 r

解

r = \frac{1}{6} - i \frac{5}{6}, r = \frac{1}{6} + i \frac{5}{6}

解答ステップ

- 12 r^{2} - 2 = - 4 r

4 r

を左側に移動します

- 12 r^{2} - 2 + 4 r = 0

標準的な形式で書く

a x^{2} + b x + c = 0

- 12 r^{2} + 4 r - 2 = 0

解くとthe二次式

r_{1, 2} = \frac{- 4 \pm 4 ^{2} - 4 ( - 12 ) ( - 2 )}{2 ( - 12 )}

簡素化

4^{2} - 4 (- 12) (- 2) : 45 i

r_{1, 2} = \frac{- 4 \pm 4 5 i}{2 ( - 12 )}

解を分離する

r_{1} = \frac{- 4 + 4 5 i}{2 ( - 12 )}, r_{2} = \frac{- 4 - 4 5 i}{2 ( - 12 )}

r = \frac{- 4 + 4 5 i}{2 ( - 12 )} : \frac{1}{6} - i \frac{5}{6}

r = \frac{- 4 - 4 5 i}{2 ( - 12 )} : \frac{1}{6} + i \frac{5}{6}

二次equationの解:

r = \frac{1}{6} - i \frac{5}{6}, r = \frac{1}{6} + i \frac{5}{6}

グラフ

人気の例

0.825x^2+0.15x-0.003621753=0

0.825 x^{2} + 0.15 x - 0.003621753 = 0

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