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人気のある代数 >

a(-a+9)-8(a^2-27)+8(-a+3)=0

解

a (- a + 9) - 8 (a^{2} - 27) + 8 (- a + 3) = 0

解

a = - \frac{- 1 + 8641}{18}, a = \frac{1 + 8641}{18}

+1

十進法表記

a = - 5.10872 \dots, a = 5.21983 \dots

解答ステップ

a (- a + 9) - 8 (a^{2} - 27) + 8 (- a + 3) = 0

拡張

a (- a + 9) - 8 (a^{2} - 27) + 8 (- a + 3) : - 9 a^{2} + a + 240

- 9 a^{2} + a + 240 = 0

解くとthe二次式

a_{1, 2} = \frac{- 1 \pm 1 ^{2} - 4 ( - 9 ) \cdot 240}{2 ( - 9 )}

1^{2} - 4 (- 9) \cdot 240 = 8641

a_{1, 2} = \frac{- 1 \pm 8641}{2 ( - 9 )}

解を分離する

a_{1} = \frac{- 1 + 8641}{2 ( - 9 )}, a_{2} = \frac{- 1 - 8641}{2 ( - 9 )}

a = \frac{- 1 + 8641}{2 ( - 9 )} : - \frac{- 1 + 8641}{18}

a = \frac{- 1 - 8641}{2 ( - 9 )} : \frac{1 + 8641}{18}

二次equationの解:

a = - \frac{- 1 + 8641}{18}, a = \frac{1 + 8641}{18}

グラフ

人気の例

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