## Prealgebra (7th Edition)

12$a^{3}b^{10}$
Subtract the exponents: $a^{4}-a$ (aka, a^1)= $a^{3}$ $b^{11}-b$ (aka, b^1)=$b^{10}$ Keep the 12. So you end up with 12$a^{3}b^{10}$