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Graphing a compound inequality on the number line.

This presents how to graph two inequalities that are connected by either the word "or" or the word "and"

From  Tom Grant 32 plays 0  

Simplifying a sum or difference of three univariate polynomials

The key to getting this type of question is distributing any minus sign on the outside of the parentheses to each term on the inside thereby changing all of the i nner signs to their opposite

From  Tom Grant 33 plays 0