In simplifying variables and coefficients, you just have to add or subtract the coefficients with the same terms. The terms are the same when they both have the variable x and exponent.
Example 1:
You can simply add 5 and 6 and copy variable x^2 because they are similar terms.
But for expression
, coefficients 4 and 6 cannot be added because they are not the same terms.
Example 2:
Simplify
