If you are multiply, and all of the numbers are the same, then you add the powers. And if you divide, you subtract the powers.
Since all of the base numbers are the same (there are all x), then you add the powers:
x⁵ * x⁴ * x³ = x¹² ( 5 + 4 + 3 = 12)
--------------------------------------------------------
Answer:
x¹²
