Question 890070
express as a single logarithm and simply if possible:
1/4log_bx+2log_by-5log_bx
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Do you mean base b?  If so:
{{{(1/4)log(b,x) + 2log(b,y) - log(b,x)}}}
= {{{log(root(4,x)) + log(y^2) - log(x)}}}
= {{{log(y^2*root(4,x)/x)}}} to base b