If f(x)=x2f(x) = x^2f(x)=x2 for x>0x > 0x>0 and f(x)=xf(x) = xf(x)=x for x≤0x \leq 0x≤0, what is f(−2)+f(2)f(-2) + f(2)f(−2)+f(2)?
0
2
6
-2