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人気のある代数 >

3x^2-116x+980=0

解

3 x^{2} - 116 x + 980 = 0

解

x = \frac{2 ( 29 + 106 )}{3}, x = \frac{2 ( 29 - 106 )}{3}

+1

十進法表記

x = 26.19708 \dots, x = 12.46957 \dots

解答ステップ

3 x^{2} - 116 x + 980 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 116 ) \pm ( - 116 ) ^{2} - 4 \cdot 3 \cdot 980}{2 \cdot 3}

(- 116)^{2} - 4 \cdot 3 \cdot 980 = 4106

x_{1, 2} = \frac{- ( - 116 ) \pm 4 106}{2 \cdot 3}

解を分離する

x_{1} = \frac{- ( - 116 ) + 4 106}{2 \cdot 3}, x_{2} = \frac{- ( - 116 ) - 4 106}{2 \cdot 3}

x = \frac{- ( - 116 ) + 4 106}{2 \cdot 3} : \frac{2 ( 29 + 106 )}{3}

x = \frac{- ( - 116 ) - 4 106}{2 \cdot 3} : \frac{2 ( 29 - 106 )}{3}

二次equationの解:

x = \frac{2 ( 29 + 106 )}{3}, x = \frac{2 ( 29 - 106 )}{3}

グラフ

人気の例

0 = 9 x^{2} - 12 x

solvefor t,h= 1/2 at^2

so l v e f or t, h = \frac{1}{2} a t^{2}

completesquare 10x^2-2x-1

co m pl e t es q u a re 10 x^{2} - 2 x - 1

x^{2} + 3 x - 25 = 0

x^{2} = - 11 x + 80