Is 3xy - 3xy like terms or unlike terms?why?
The terms are like because 3xy and -3xy have the same variable xy.
Whatever the value is, whether negative or positive, the terms are like when the variables are same. Eg: 2xy and -6xy are like terms
Whatever the value is, whether negative or positive, the terms are like when the variables are same. Eg: 2xy and -6xy are like terms