Question 173505
Definition of logs:


{{{y=log(b,(x))}}} if and only if {{{b^y=x}}}.


Since you wrote log and did not specify a base, base = 10 is understood.


From the above definition:


{{{log(10,(x^2-936))=3}}} if and only if {{{10^3=x^2-936}}}


So:


{{{x^2-936-1000=0}}}


{{{x^2-1936=0}}}


{{{(x-44)(x+44)=0}}}


Therefore {{{x=44}}} or {{{x=-44}}}