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人気のある代数 >

-4d^2-d+3=0

解

- 4 d^{2} - d + 3 = 0

解

d = - 1, d = \frac{3}{4}

+1

十進法表記

d = - 1, d = 0.75

解答ステップ

- 4 d^{2} - d + 3 = 0

解くとthe二次式

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

(- 1)^{2} - 4 (- 4) \cdot 3 = 7

d_{1, 2} = \frac{- ( - 1 ) \pm 7}{2 ( - 4 )}

解を分離する

d_{1} = \frac{- ( - 1 ) + 7}{2 ( - 4 )}, d_{2} = \frac{- ( - 1 ) - 7}{2 ( - 4 )}

d = \frac{- ( - 1 ) + 7}{2 ( - 4 )} : - 1

d = \frac{- ( - 1 ) - 7}{2 ( - 4 )} : \frac{3}{4}

二次equationの解:

d = - 1, d = \frac{3}{4}

グラフ

人気の例

40x=-1000+25x+1/2 (1.5)x^2

40 x = - 1000 + 25 x + \frac{1}{2} (1.5) x^{2}

solvefor y=3x^2-5x-4,x

so l v e f or y = 3 x^{2} - 5 x - 4, x

2 r^{2} - 3 r - 8 = 0

(x-1)^2=x-3(x-3+5)

(x - 1)^{2} = x - 3 (x - 3 + 5)

x^{2} = 5 \cdot 15