if a,b,c are positive real numbers such ...

if a,b,c are positive real numbers such that `a^(log_3(7));b^(log_7(11))=49 and c^(log_11(25))=sqrt(11)` find the vale of `a^((log_3(7))^2)+b^((log_7(11))^2)+c^((log_11(25))^2)`

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log_(3/4)log_8(x^2+7)+log_(1/2)log_(1/4)(x^2+7)^(-1)=-2