Автор - priver009

ррешите пжжжжжжжжжжж плиз

Ответ

Проверено экспертом

Автор - Alexаndr
(frac{4a}{a^2-1}+frac{a-1}{a+1})*frac{2a}{a+1}-frac{a}{a-1}-frac{a}{a^2-1}=frac{a^2}{a^2-1}\frac{a^2+2a+1}{(a-1)(a+1)}*frac{2a}{a+1}-frac{a}{a-1}-frac{a}{a^2-1}=frac{a^2}{a^2-1}\frac{2a}{a-1}-frac{a}{a-1}-frac{a}{a^2-1}=frac{a^2}{a^2-1}\frac{a}{a-1}-frac{a}{a^2-1}=frac{a^2}{a^2-1}\frac{a^2+a-a}{a^2-1}=frac{a^2}{a^2-1}\frac{a^2}{a^2-1}=frac{a^2}{a^2-1}

(frac{m-2}{m+2}-frac{m+2}{m-2}):frac{8m}{m^2-4}+frac{1-m}{1-3m}=frac{2m}{1-3m}\frac{m^2-4m+4-m^2-4m-4}{(m+2)(m-2)}*frac{m^2-4}{8}+frac{1-m}{1-3m}=frac{2m}{1-3m}\frac{-8m}{m^2-4}*frac{m^2-4}{8}+frac{1-m}{1-3m}=frac{2m}{1-3m}\-1+frac{1-m}{1-3m}=frac{2m}{1-3m}\frac{2m}{1-3m}=frac{2m}{1-3m}

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