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人気のある代数 >

4[4(x+1)(x+2)+2(x-1)^2]=11(2-x)-x(5+8x)

解

4 [4 (x + 1) (x + 2) + 2 (x - 1)^{2}] = 11 (2 - x) - x (5 + 8 x)

解

x = - \frac{3}{4}

+1

十進法表記

x = - 0.75

解答ステップ

4 [4 (x + 1) (x + 2) + 2 (x - 1)^{2}] = 11 (2 - x) - x (5 + 8 x)

拡張

4 (4 (x + 1) (x + 2) + 2 (x - 1)^{2}) : 24 x^{2} + 32 x + 40

拡張

11 (2 - x) - x (5 + 8 x) : 22 - 16 x - 8 x^{2}

24 x^{2} + 32 x + 40 = 22 - 16 x - 8 x^{2}

8 x^{2}

を左側に移動します

32 x^{2} + 32 x + 40 = 22 - 16 x

16 x

を左側に移動します

32 x^{2} + 48 x + 40 = 22

22

を左側に移動します

32 x^{2} + 48 x + 18 = 0

解くとthe二次式

x_{1, 2} = \frac{- 48 \pm 4 8 ^{2} - 4 \cdot 32 \cdot 18}{2 \cdot 32}

4 8^{2} - 4 \cdot 32 \cdot 18 = 0

x_{1, 2} = \frac{- 48 \pm 0}{2 \cdot 32}

x = \frac{- 48}{2 \cdot 32}

\frac{- 48}{2 \cdot 32} = - \frac{3}{4}

x = - \frac{3}{4}

二次equationの解:

x = - \frac{3}{4}

グラフ

人気の例

(a-b)x^2+(c-a)x+(b-c)=0

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

9 x^{2} + a = a^{2} x + a

2(x-3x^2)+5x(x-2)+9=-8x

2 (x - 3 x^{2}) + 5 x (x - 2) + 9 = - 8 x

solvefor x,x^2+y^2-2x-4y+k=0

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

x^2-3x*sqrt(2)=-4

x^{2} - 3 x \cdot 2 = - 4