2log2(3)+log7(2)-log7(14)=2log2(3)+log7(2/14)=2log2(3)+log7(1/7)=2log2(3)-1=log2(9)-1
log7(1/7)=log7(7^-1)=-1*log7(7)=-1
ВЛОЖЕНИЕ
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(c^-6)^2/c^-3=c^(-6*2+3)=c^(-9)
Ответ:<span>1) c^-9</span>
(4-3у)/(у+4)×[(у+4)(у-4)]/[-(у-4)(у-4)+у(у+4)]=
[(4-3у)×(у-4)]/[-4(4-3у)]=-(у-4)/4