Adding and subtracting polynomials with one variable

 is an exercise under the Algebra I Math Mission. This exercise practices the addition and subtraction of polynomial expressions with a single variable.

Types of Problems
There is one type of problem in this exercise:
 * 1) Express $$A-B$$ as a trinomial.: This problem has two trinomial expressions and user is asked to express $$A-B$$ as a trinomial. Adding and subtracting polynomials with one variable.PNG

Strategies
Knowledge of adding and subtracting trinomials and polynomials are recommended to have success while doing this exercise.
 * 1) When user adds or subtract terms in a polynomial expression, the only way that they can simplify the expression is by combining those terms that are alike.
 * 2) Parentheses around the first trinomial don’t affect the order of operations, so user can just remove them.
 * 3) If user identifies like terms, they need to combine them and make sure to keep track of positive and negative signs.

Real-life Applications

 * 1) Problems like this will appear on standardized tests, like the SATs and ACTs.