Помогите с упражнением 96

[latex] \frac{m}{m+n} + \frac{2mn}{m^2-n^2} - \frac{n}{m-n} = \frac{m(m-n)}{m^2-n^2} + \frac{2mn}{m^2-n^2} - \frac{n(m+n)}{m^2-n^2}[/latex][latex]= \frac{m^2-mn+2mn-mn-n^2}{m^2-n^2} = \frac{m^2-n^2}{m^2-n^2} =1[/latex] [latex] \frac{x^3}{x^2-4} - \frac{x}{x-2} - \frac{2}{x+2} = \frac{x^3}{x^2-4} - \frac{x(x+2)}{x^2-4} - \frac{2(x-2)}{x^2-4} = \frac{x^3-x^2-2x-2x+4}{x^2-4} [/latex][latex]= \frac{x^3-x^2-4x+4}{x^2-4} = \frac{x^2(x-1)-4(x-1)}{x^2-4} = \frac{(x^2-4)(x-1)}{x^2-4} = x-1[/latex]

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