Question

X^2-16>0 range of x?

Answer 1

hello :
x²-16 >0 ... x² >16
√x² > √16 but : √16 = 4 and √x² = |x |
conclusion : |x | > 4
the range is : x < 4 or x > 4

Answer 2

Assuming "range" is used in the normal Englsih sense, and not the mathematical meaning for the possible value of a function.

If we limit ourselves to real numbers, then
-4<=x<=4 for x^2-16>0