Question

N the expression (x2 + 3), the base is _____.

x
2
3

Answer 1

X is the base.

The base is X because in exponents and mathematical expressions the base refers to the number or variable that is being used to the power.

example:

3²

the 3 is the base!

Answer 2

If you are studying Exponent Rules, then the answer to your question is NO!
The base in the question you provided is the variable x.