How do you do polynomials without parentheses?

To work with polynomials without parentheses, you need to first ensure that all terms are in their simplest form, meaning you should combine like terms. This involves adding or subtracting coefficients of terms with the same variable and exponent. If you're performing operations like addition or subtraction, align similar terms vertically and combine them. For multiplication, distribute each term in the first polynomial to every term in the second polynomial, then combine like terms.