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Problems
Problem 2.1:
Simplify (4x4 +3x6 -23x5 +9) + (12x - 4x4 +22x5).
[Solution]
Problem 2.2:
Simplify (8x2 +2xy - 15y + y2) + (6y - 7x + 2xy - 3x2).
[Solution]
Problem 2.3:
Simplify (- 2x6 + x4 +18x3 +11) + (3x5 -2x4 -18x3 - 12x + 9)
[Solution]
Problem 2.4:
What monomial does the 
represent?
(4x3 + x2 -) + (- 5x3 +6x2 +13x + 4) = - x3 +7x2 + x + 4
[Solution]
(4x3 + x2 -
Problem 2.5:
Simplify (7x3 +4x2 -11x + 8) - (3x2 - 2x - 1).
[Solution]
Problem 2.6:
Simplify (- 4x4 - x3 +11x2 -2) - (- 4x4 +3x3 +12x2 - 3x + 4)
[Solution]
Problem 2.7:
Simplify (3x6 -12x4 +43x3 -12x + 9) - (3x5 -7x4 -23x3 +18x2 + 12x - 4)
[Solution]
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