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人気のある代数 >

1/3 x^2-2x-2=0

解

\frac{1}{3} x^{2} - 2 x - 2 = 0

解

x = 3 + 15, x = 3 - 15

+1

十進法表記

x = 6.87298 \dots, x = - 0.87298 \dots

解答ステップ

\frac{1}{3} x^{2} - 2 x - 2 = 0

以下で両辺を乗じる:

3

x^{2} - 6 x - 6 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 6 ) \pm ( - 6 ) ^{2} - 4 \cdot 1 \cdot ( - 6 )}{2 \cdot 1}

(- 6)^{2} - 4 \cdot 1 \cdot (- 6) = 215

x_{1, 2} = \frac{- ( - 6 ) \pm 2 15}{2 \cdot 1}

解を分離する

x_{1} = \frac{- ( - 6 ) + 2 15}{2 \cdot 1}, x_{2} = \frac{- ( - 6 ) - 2 15}{2 \cdot 1}

x = \frac{- ( - 6 ) + 2 15}{2 \cdot 1} : 3 + 15

x = \frac{- ( - 6 ) - 2 15}{2 \cdot 1} : 3 - 15

二次equationの解:

x = 3 + 15, x = 3 - 15

グラフ

人気の例

x^{2} + 20 x + 5 = 0

(x + 1)^{2} - 4 x = 1

124=-16t^2+100t+10

124 = - 16 t^{2} + 100 t + 10

quadraticformula 2x^2+5x+2=0

q u a d r a t i c f or m u l a 2 x^{2} + 5 x + 2 = 0

solvefor x,y=-48.141x^2+39.476x

so l v e f or x, y = - 48.141 x^{2} + 39.476 x