Write the expression 17log2(z)9log2(w)\displaystyle {17}{{\log}_{{{2}}}{\left({z}\right)}}-{9}{{\log}_{{{2}}}{\left({w}\right)}} as a single logarithm.

17log2(z)9log2(w)=\displaystyle {17}{{\log}_{{{2}}}{\left({z}\right)}}-{9}{{\log}_{{{2}}}{\left({w}\right)}}=