Question

The solution set of |a| = 4 is

{-4}
{4}
{-4, 4}

Answer 1

|-a| = |a| = a

Answer 2

So what would it be?

Answer 3

Since \(|a|=|-a|\) then we can deduce that \(|4|=|-4|=4\) and so therefore putting in -4 or 4 will be true so the solution set is \(\{-4,4\}\)

Answer 4

|a|=4 is (-4,4) because is can be positive or negative. |-4| or |4|.