The unlike terms not having the same literal coefficients.
For example:
(i) 5ab, 5a, 5ac are unlike terms because they do not have identical variables.
(ii) 11xy, 11x2y, 11xy2 are unlike terms.
(iii) 2x, 2y, 2m are unlike terms.
Now look at the terms of the following polynomials:
(i) 11a2b2 + 3ab2
We observe that two terms of the binomial (11a2b2 and 3ab2) have same variables raised to different powers. So, the binomial is made up of two unlike terms or dissimilar terms.
