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人気のある代数 >

3x^2-4x-16=0

解

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

解

x = \frac{2 ( 1 + 13 )}{3}, x = \frac{2 ( 1 - 13 )}{3}

+1

十進法表記

x = 3.07036 \dots, x = - 1.73703 \dots

解答ステップ

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

解くとthe二次式

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

(- 4)^{2} - 4 \cdot 3 (- 16) = 413

x_{1, 2} = \frac{- ( - 4 ) \pm 4 13}{2 \cdot 3}

解を分離する

x_{1} = \frac{- ( - 4 ) + 4 13}{2 \cdot 3}, x_{2} = \frac{- ( - 4 ) - 4 13}{2 \cdot 3}

x = \frac{- ( - 4 ) + 4 13}{2 \cdot 3} : \frac{2 ( 1 + 13 )}{3}

x = \frac{- ( - 4 ) - 4 13}{2 \cdot 3} : \frac{2 ( 1 - 13 )}{3}

二次equationの解:

x = \frac{2 ( 1 + 13 )}{3}, x = \frac{2 ( 1 - 13 )}{3}

グラフ

人気の例

solvefor x,x^2+9=0

so l v e f or x, x^{2} + 9 = 0

x^{2} - 14 = - 5 x

9x^2+12=3+12x+5x^2

9 x^{2} + 12 = 3 + 12 x + 5 x^{2}

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

x^{2} - 10 x - 2 = 0