Question

ПЛИЗ! ДАЮ 35 БАЛЛОВ ПРИМЕР ПО АЛГЕБРЕ!

Answer 1

$\displaystyle\frac{3m^{2} +6mn+3n^{2} }{6n^{2} -6m^{2} } =\frac{3(m^{2} +2mn+n^{2} )}{6(n^{2} -m^{2} )} =\frac{(m+n)(m+n)}{2(n-m)(n+m)} =\frac{m+n}{2(n-m)} \\ \\ m=0,25,\;\;\;\;\;n=0,75\\ \\ \frac{0,25+0,75}{2(0,75-0,25)} =\frac{1}{2*0,5} =1$

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$\displaystyle(\frac{a^{2} +b^{2} }{a^{2} -b^{2} } -1)(\frac{a}{b} -\frac{b}{a})=\frac{a^{2} +b^{2} -a^{2} +b^{2} }{a^{2} -b^{2} } *\frac{a^{2} -b^{2} }{ab} =\frac{2b^{2} }{ab}=\frac{2b}{a} \\ \\ a=-2,52,\;\;\;\;b=1,26 \\ \\- \frac{2*1,26}{2,52} =-\frac{2,52}{2,52} =-1$