What is the solution set for, |f(x)|= -5 ? and also for |f(x)|= 5

Question

What is the solution set for these two?

Answer 1

lf(x)l=-5 has no solution because absolute value is non-negative; 0 or positive only

lf(x)l=5 has two solutions, f(x)=5 and f(x)=-5