`7^(log_(3)5)+3^(log_(5)7)-5^(log_(3)7) -7^(log_(5)3)`

Calculate 7^(log g_(3)5) + 3 ^(log_(5)7 ) - 5 ^(log_(3)7) - 7 ^(log_(5)3)

log_(3)(5+8log_(49)(5+4log_(49)7))

3^(log_(3)7)+7^(log_(8)(1/8))+log_(0.3)3

3(log_(7)x+log_(x)7)=10

x=log_(5)3+log_(7)5+log_(9)7

Find the value of (log_(3)4)(log_(4)5)(log_(5)6)(log_(6)7)(log_(7)8)(log_(8)9)

The value of (log_(3) 5 xx log_(25) 27 xx log_(49) 7)/(log_(81)3) is

Which of the following real numbers is (are) non-positive ? (log) _(1/2)((2+sqrt(3))/(2-sqrt(3))) (b) (log_(12)(sqrt(65)-7)backslash(c)(log)_(2)((log)_(5)3*(log)_(7)5.(log)_(3)7)(d)(log)_(7)((3)/(2))^((-2)/3)