There's no difference.
Ppl use () so they can see the difference between negative values and minus. But if you are talking about values like
2x-3⁴ and (2x - 3)⁴ this one different
2x-3⁴ = only -3 get the power of 4
(2x - 3)⁴ = 2x and -3 get the power of 4
