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人気のある代数 >

48x^2-13x-1=0

解

48 x^{2} - 13 x - 1 = 0

解

x = \frac{1}{3}, x = - \frac{1}{16}

+1

十進法表記

x = 0.33333 \dots, x = - 0.0625

解答ステップ

48 x^{2} - 13 x - 1 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 13 ) \pm ( - 13 ) ^{2} - 4 \cdot 48 ( - 1 )}{2 \cdot 48}

(- 13)^{2} - 4 \cdot 48 (- 1) = 19

x_{1, 2} = \frac{- ( - 13 ) \pm 19}{2 \cdot 48}

解を分離する

x_{1} = \frac{- ( - 13 ) + 19}{2 \cdot 48}, x_{2} = \frac{- ( - 13 ) - 19}{2 \cdot 48}

x = \frac{- ( - 13 ) + 19}{2 \cdot 48} : \frac{1}{3}

x = \frac{- ( - 13 ) - 19}{2 \cdot 48} : - \frac{1}{16}

二次equationの解:

x = \frac{1}{3}, x = - \frac{1}{16}

グラフ

人気の例

(k^2+3)*x^2+(k^3+k+1)*x+2k+2=0

(k^{2} + 3) \cdot x^{2} + (k^{3} + k + 1) \cdot x + 2 k + 2 = 0

(a+b)2x^2+6(a^2-b^2)x+9(a-b)2=0

(a + b) 2 x^{2} + 6 (a^{2} - b^{2}) x + 9 (a - b) 2 = 0

x^2+(m-1)x+(m+2)=0

x^{2} + (m - 1) x + (m + 2) = 0

solvefor a,130r^2-a^2r^3+a^2=0

so l v e f or a, 130 r^{2} - a^{2} r^{3} + a^{2} = 0

(3)x=(x^2=9-3=5)

(3) x = (x^{2} = 9 - 3 = 5)