Answer:
4a^4b^6 (4a to the 4th power b to the 6th power)
Explanation:
to simplify this, you can simply add the exponents together to get the answer
any number/letter without an exponent is raised to the first power
so for example:
a^1 + a³ = a^4
b^1 + b^5 = b^6
the answer would be 4a^4b^6