��.195 �� 10-11 �� (��)

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$�� 195. �� :�) {y-log(3; x)=1, x^y=3^12)};�) {3^(1+log(3; x^2+y^2))=15, log(3; x^2-y^2)-log(3; x-y))=0};�) {log(5; x)+3^log(3; y)=7,...$

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195. �� :

�) {y-log(3; x)=1, x^y=3^12)};

�) {3^(1+log(3; x^2+y^2))=15, log(3; x^2-y^2)-log(3; x-y))=0};

�) {log(5; x)+3^log(3; y)=7, x^y=5^12};

�) {5^(1+log(5; x^2-y^2)=25, log(5; x^2-y^2)=log(5; x+y)}.

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