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7.7 Adding and Subtracting Polynomials. Algebra 10. Main Idea. Just like the title says, we will be adding and subtracting polynomials – be careful of negatives! Remember how we lined up systems to add? Remember how important is was to make sure the same terms were aligned? - PowerPoint PPT Presentation
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7.7 Adding and Subtracting Polynomials
Algebra 10
Main Idea
• Just like the title says, we will be adding and subtracting polynomials – be careful of negatives!
• Remember how we lined up systems to add?• Remember how important is was to make
sure the same terms were aligned?• LIKE TERMS: same variable, same power
Ex 1 – Adding & Subtracting Monomials
• To add or subtract, simply combine like terms.
Practice 1
Ex 2 Adding Polynomials
• You can add them horizontally or vertically
Ex 2 Adding Polynomials
• You can add them horizontally or vertically
Practice 2
Ex 3 – Subtracting Polynomials
• To subtract a group, distribute the subtraction sign.
Ex 3 – Subtracting Polynomials
• To subtract a group, distribute the subtraction sign.
Practice 3
Review
• How do you identify like terms?• When using a vertical format, what is a
placeholder? How is it helpful?• What is the first step to subtracting
polynomials?• Why are parentheses use when subtracting?• What is the purpose of aligning terms?
