упростите данные выражения
[tex]( \frac{2m+1}{20-1}- \frac{2m-1}{2m+1} ): \frac{4m}{10m-5} [/tex]
[tex]( \frac{a}{x-a} + \frac{a}{x+a} )* \frac{ x^{2}+2ax+ a^{2} }{ 2a^{2} } [/tex]
[tex]( \frac{ x^{2} }{ y^{2} }+ \frac{y}{x}):( \frac{x}{ y^{2} }- \frac{1}{y} + \frac{1}{x}) [/tex]
[tex]( \frac{2m+1}{20-1}- \frac{2m-1}{2m+1} ): \frac{4m}{10m-5} [/tex]
[tex]( \frac{a}{x-a} + \frac{a}{x+a} )* \frac{ x^{2}+2ax+ a^{2} }{ 2a^{2} } [/tex]
[tex]( \frac{ x^{2} }{ y^{2} }+ \frac{y}{x}):( \frac{x}{ y^{2} }- \frac{1}{y} + \frac{1}{x}) [/tex]
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