I don't think any of them exist. the only ones I can think of make my feel there are any others
Answer:
7g+3h
Step-by-step explanation:
you combine like terms by adding 3g and 4g and subtracting 2h from 5h.
Answer:
-4 = slope
Step-by-step explanation:
3xy^z: exponent is not a nonnegative int.
r-2s: it is not a product
(ab)^1/2: exponent is not a nonnegative int.