22x+1⋅25⋅23x=
We'll use the law of exponents for multiplying terms with identical bases:
Note that this law applies to any number of terms being multiplied, not just two terms. For example, when multiplying three terms with the same base, we get:
When we used the above law of exponents twice, we can also perform the same calculation for four terms in multiplication and so on...
Let's return to the problem:
Notice that all terms in the multiplication have the same base, so we'll use the above law:
Therefore, the correct answer is a.