Question

СРОЧНО!!!! ДАЮ 100 БАЛЛОВ

Answer 1

1) log(13)(169x)=log(13)169+log(13)x=2+54=56

2)log²(15)3+log(15)5*(log(15)3+1)=log(15)3(log(15)3+log(15)5)+log(15)5=

=log(15)3*log(15)15+log(15)5=log(15)3+log(15)5=log(15)15=1

3)(log(5)2+log(5)10)(log(5)2-log(5)10)/log(5)20=

=log(5)20*log(5)(1/5)/log(5)20=log(5)(1/5)=-1