Answer:
The base number is 12
Explanations:
Given the indices expression:

We are determining the base number. Recall from indices that if we have:

"a" serves as the base number and:
"b" serves as the exponent
Compared with the given expression you can see that:
• a = 12 (Which is the, base numbe,r)
,
• b = 4 (which is the ,exponent,)
Hence we can conclude that the base number is 12.