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受欢迎的代数 >

(3(x-1)-4x+(x-5))/4 =(-2x(x-2)-4x-7)/2

解答

\frac{3 ( x - 1 ) - 4 x + ( x - 5 )}{4} = \frac{- 2 x ( x - 2 ) - 4 x - 7}{2}

解答

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

求解步骤

\frac{3 ( x - 1 ) - 4 x + ( x - 5 )}{4} = \frac{- 2 x ( x - 2 ) - 4 x - 7}{2}

展开

\frac{3 ( x - 1 ) - 4 x + ( x - 5 )}{4} : - 2

展开

\frac{- 2 x ( x - 2 ) - 4 x - 7}{2} : - x^{2} - \frac{7}{2}

- 2 = - x^{2} - \frac{7}{2}

交换两边

- x^{2} - \frac{7}{2} = - 2

将

\frac{7}{2}

到右边

- x^{2} = - 2 + \frac{7}{2}

化简

- 2 + \frac{7}{2} : \frac{3}{2}

- x^{2} = \frac{3}{2}

两边除以

- 1

x^{2} = - \frac{3}{2}

对于

x^{2} = f (a)

解为

x = f (a), - f (a)

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

- \frac{3}{2} = \frac{3}{2} i

- - \frac{3}{2} = - \frac{3}{2} i

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

作图

流行的例子

9 - ∣ 2 x + 8 ∣ \leq 5

- 6 y - y^{2} = - 28

14 x - 16 = 10 x

y^{2} + 9 = 0

14 = - (p - 8)