求解 f(x)=-2/(2x-1)^2-2 | Microsoft Math Solver

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\frac{-2}{\left(2x-1\right)^{2}}-\frac{2\left(2x-1\right)^{2}}{\left(2x-1\right)^{2}}

若要对表达式执行加法或减法运算，请重写该表达式，使其分母相同。求 2 与 \frac{\left(2x-1\right)^{2}}{\left(2x-1\right)^{2}} 的乘积。

\frac{-2-2\left(2x-1\right)^{2}}{\left(2x-1\right)^{2}}

由于 \frac{-2}{\left(2x-1\right)^{2}} 和 \frac{2\left(2x-1\right)^{2}}{\left(2x-1\right)^{2}} 具有相同的分母，可通过分子相减来求差。

\frac{-2-8x^{2}+8x-2}{\left(2x-1\right)^{2}}

完成 -2-2\left(2x-1\right)^{2} 中的乘法运算。

\frac{-4-8x^{2}+8x}{\left(2x-1\right)^{2}}

合并 -2-8x^{2}+8x-2 中的项。

\frac{-4-8x^{2}+8x}{4x^{2}-4x+1}

展开 \left(2x-1\right)^{2}。