How many terms are in a^2-ab+8b+b^2-1

Remember that the terms of a polynomial are the parts of the polynomial separating by addition and subtraction; in other words, the parts separated by (+) and (-) signs. Knowing this, we can separate the terms of our polynomial:

- First term: 
- Second term: 
- Third term: 
- Fourth term: 
- Fifth term: 

We can conclude that there are 5 terms in the polynomial .