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7.7 Adding and Subtracting Polynomials

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?

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7.7 Adding and Subtracting Polynomials

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  1. 7.7 Adding and Subtracting Polynomials Algebra 10

  2. 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

  3. Ex 1 – Adding & Subtracting Monomials • To add or subtract, simply combine like terms.

  4. Practice 1

  5. Ex 2 Adding Polynomials • You can add them horizontally or vertically

  6. Ex 2 Adding Polynomials • You can add them horizontally or vertically

  7. Practice 2

  8. Ex 3 – Subtracting Polynomials • To subtract a group, distribute the subtraction sign.

  9. Ex 3 – Subtracting Polynomials • To subtract a group, distribute the subtraction sign.

  10. Practice 3

  11. 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?

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