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人気のある代数 >

9x^2-12x+2=0

解

9 x^{2} - 12 x + 2 = 0

解

x = \frac{2 + 2}{3}, x = \frac{2 - 2}{3}

+1

十進法表記

x = 1.13807 \dots, x = 0.19526 \dots

解答ステップ

9 x^{2} - 12 x + 2 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 12 ) \pm ( - 12 ) ^{2} - 4 \cdot 9 \cdot 2}{2 \cdot 9}

(- 12)^{2} - 4 \cdot 9 \cdot 2 = 62

x_{1, 2} = \frac{- ( - 12 ) \pm 6 2}{2 \cdot 9}

解を分離する

x_{1} = \frac{- ( - 12 ) + 6 2}{2 \cdot 9}, x_{2} = \frac{- ( - 12 ) - 6 2}{2 \cdot 9}

x = \frac{- ( - 12 ) + 6 2}{2 \cdot 9} : \frac{2 + 2}{3}

x = \frac{- ( - 12 ) - 6 2}{2 \cdot 9} : \frac{2 - 2}{3}

二次equationの解:

x = \frac{2 + 2}{3}, x = \frac{2 - 2}{3}

グラフ

人気の例

x^{2} + a x + 10 = 0

solvefor b,a^2=b^2+c^2

so l v e f or b, a^{2} = b^{2} + c^{2}

0 = x^{2} + 8 x + 15

s^{2} - 0.1 s + 1 = 0

solvefor x,f= 5/3 m^4x^2-7m^3x-3m

so l v e f or x, f = \frac{5}{3} m^{4} x^{2} - 7 m^{3} x - 3 m