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人気のある代数 >

-3x^2-8x+16=0

解

- 3 x^{2} - 8 x + 16 = 0

解

x = - 4, x = \frac{4}{3}

+1

十進法表記

x = - 4, x = 1.33333 \dots

解答ステップ

- 3 x^{2} - 8 x + 16 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 8 ) \pm ( - 8 ) ^{2} - 4 ( - 3 ) \cdot 16}{2 ( - 3 )}

(- 8)^{2} - 4 (- 3) \cdot 16 = 16

x_{1, 2} = \frac{- ( - 8 ) \pm 16}{2 ( - 3 )}

解を分離する

x_{1} = \frac{- ( - 8 ) + 16}{2 ( - 3 )}, x_{2} = \frac{- ( - 8 ) - 16}{2 ( - 3 )}

x = \frac{- ( - 8 ) + 16}{2 ( - 3 )} : - 4

x = \frac{- ( - 8 ) - 16}{2 ( - 3 )} : \frac{4}{3}

二次equationの解:

x = - 4, x = \frac{4}{3}

グラフ

人気の例

completesquare x^2+2x-15=0

co m pl e t es q u a re x^{2} + 2 x - 15 = 0

k^{2} = 6 k - 10

5 X^{2} + 7 X + 2 = 0

0 = 2 x^{2} + 4 x - 16

3 x^{2} + 6 x = - 3