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人気のある代数 >

7x^2-23x+6=0

解

7 x^{2} - 23 x + 6 = 0

解

x = 3, x = \frac{2}{7}

+1

十進法表記

x = 3, x = 0.28571 \dots

解答ステップ

7 x^{2} - 23 x + 6 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 23 ) \pm ( - 23 ) ^{2} - 4 \cdot 7 \cdot 6}{2 \cdot 7}

(- 23)^{2} - 4 \cdot 7 \cdot 6 = 19

x_{1, 2} = \frac{- ( - 23 ) \pm 19}{2 \cdot 7}

解を分離する

x_{1} = \frac{- ( - 23 ) + 19}{2 \cdot 7}, x_{2} = \frac{- ( - 23 ) - 19}{2 \cdot 7}

x = \frac{- ( - 23 ) + 19}{2 \cdot 7} : 3

x = \frac{- ( - 23 ) - 19}{2 \cdot 7} : \frac{2}{7}

二次equationの解:

x = 3, x = \frac{2}{7}

グラフ

人気の例

quadraticformula 12x^2-11x+2=0

q u a d r a t i c f or m u l a 12 x^{2} - 11 x + 2 = 0

10 r^{2} - 2 r - 18 = 0

m^{2} - 8 m + 9 = 0

solvefor x,4x^2-3kx+10=0

so l v e f or x, 4 x^{2} - 3 k x + 10 = 0

x (x + 2) = 80