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人気のある代数 >

(a+1)3(a-1)=8

解

(a + 1) 3 (a - 1) = 8^{\circ}

解

a = \frac{3 + 8 ^{\circ}}{3}, a = - \frac{3 + 8 ^{\circ}}{3}

+1

十進法表記

a = 1.02300 \dots, a = - 1.02300 \dots

解答ステップ

(a + 1) \cdot 3 (a - 1) = 8^{\circ}

拡張

(a + 1) \cdot 3 (a - 1) : 3 a^{2} - 3

3 a^{2} - 3 = 8^{\circ}

8^{\circ}

を左側に移動します

3 a^{2} - 3 - 8^{\circ} = 0

解くとthe二次式

a_{1, 2} = \frac{- 0 \pm 0 ^{2} - 4 \cdot 3 ( - 3 - 8 ^{\circ} )}{2 \cdot 3}

0^{2} - 4 \cdot 3 (- 3 - 8^{\circ}) = 23 3 + 8^{\circ}

a_{1, 2} = \frac{- 0 \pm 2 3 3 + 8 ^{\circ}}{2 \cdot 3}

解を分離する

a_{1} = \frac{- 0 + 2 3 3 + 8 ^{\circ}}{2 \cdot 3}, a_{2} = \frac{- 0 - 2 3 3 + 8 ^{\circ}}{2 \cdot 3}

a = \frac{- 0 + 2 3 3 + 8 ^{\circ}}{2 \cdot 3} : \frac{3 + 8 ^{\circ}}{3}

a = \frac{- 0 - 2 3 3 + 8 ^{\circ}}{2 \cdot 3} : - \frac{3 + 8 ^{\circ}}{3}

二次equationの解:

a = \frac{3 + 8 ^{\circ}}{3}, a = - \frac{3 + 8 ^{\circ}}{3}

グラフ

人気の例

- 2 x^{2} + 8 x + 9 = 0

4 x^{2} - 14 x + 49 = 0

16= 4/3 (8x+3)34(8x+3)

16 = \frac{4}{3} (8 x + 3) 34 (8 x + 3)

x^{2} = 3 (x + 6)

x^{2} + 4 x - 12 = 9