+865 If f(x)={x2−4if x≥−4,x+3otherwise,}then for how many values of $x$ is $f(f(x)) = 5$?
+37165 x = 3 , -3 ( you would THINK x = 2 would work, but 2 >= -4 so f(2) = 22-4=0 )
so f(x) has to equal 3 or -3
x^2-4 = 3 then x = +-sqrt7
x^2-4 = -3 then x = +- 1 4 answers I believe........ edited
