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# Algebra 6 Point 7

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### Transcript

• 1. 6.7 Addition and Subtraction of Polynomials
Objective:
• To add and subtract polynomials
• 2. To write the sum of polynomials in descending order
Frameworks: 10.P.3
7x2 - 2x + 1
4x2 + 3x - 6
11x2 + x - 5
• 4. Sometimes you have to sort first:
9y3 - 7y + 8 + y2
7y – y3 – 3y4 - 3
Sort:
9y3 + y2 - 7y + 8
– 3y4 – y3 + 7y - 3
5x2 + 7x5 - 8
-9x2 + x – 2 – 6x5
• 6. You can also use a horizontal form:
5x2 + 7x5 - 8
-9x2 + x – 2 – 6x5
Sort in descending order:
7x5 – 6x5 + 5x2 -9x2 + x – 8 - 2
• 7. How would you simplify . . .
-(5x2 + 7x5 - 8)
Change the sign of each term.
• 8. Subtraction
(5a2 - 3a + 6)- (2a2 - 3a - 2)