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Add the following polynomials:
Solution:
The first thing that we have to do to is to arrange the given polynomials as follows
Since all the grouped terms are all addition, then we can add all the same terms. If it is subtraction of polynomials, then we have to change the sign of the terms of the subtrahend first and then perform the addition. Now, let's combine the same terms and variables of the polynomials as follows
Therefore, the answer is 0.
Note: When you do any algebraic operations, please be very careful because many students are sometimes make a mistake especially with the signs.