Answer: 4ab^2 +20b - 3 -3a
Combine like terms.
Combine ab, b, a terms for #1
Combine x^3, x^2, x terms for #2
When ur variables cancel and ur left with a true statement...equal statements, such as 0 = 0 or 6 = 6, then u will have infinite solutions. So the answer to this is infinite solutions.
** now if u were left with 0 = 3 or 2 = -2....then there would be no solutions.
if u ended up with x = 7 or y = 5....a variable equal to a number, then there is 1 solution
