Answer:
1. 3x³ - 7x² - 7
+ 4x³ + 5x² - 3
---------------------------------------
2. 16x² + 4x - 13
+ -21x² - 7x + 4
------------------------------------------
3. 6x³ - x² - 3x + 4
+ x³ + 13x - 1
-------------------------------------------------------
4. 8m² - m + 10
+ 2m² - 11
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Answers & Comments
Answer:
1. 3x³ - 7x² - 7
+ 4x³ + 5x² - 3
---------------------------------------
7x³ - 2x² - 10
2. 16x² + 4x - 13
+ -21x² - 7x + 4
------------------------------------------
-5x² - 2x - 9
3. 6x³ - x² - 3x + 4
+ x³ + 13x - 1
-------------------------------------------------------
7x³ - x² + 10x + 3
4. 8m² - m + 10
+ 2m² - 11
--------------------------------------------
10m² - m - 1