A.
1. SOL: 4+2n^3+5n^3+2 ANS: 7n^3+6
2. SOL: -4k^4+14+3k^2+-3k^4-14k^2-8 ANS: -7k^4-11k^2+6
3. SOL: -x^4+13x^5+6x^3+6x^3+5x^5+7x^4 ANS: 18x^5+6x^4+12x^3
4. SOL: 13n^2+11n-2n^4+(-13n^2)-3n-6n^4 ANS: -8n^4+8n
5. SOL: -7X^5+14-2x+10x^4+7x+5x^5 ANS: -2x^5+10x^4+5x+14
B.
1. SOL: 4n-3n^3-3n^3+4n ANS: -6n^3+8n
2. SOL: 3a^2+1-4+2a^2 ANS: 5a^2-3
3. SOL: 4r^3+3r^4-r^4-5r^3 ANS: 2r^4-1r^3
4. SOL: 5a+4-5a+3 ANS: 7
5. SOL: 3X^4-3X-3X-3X^4 ANS: -6x
(correct me if im wrong :>)
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Answers & Comments
A.
1. SOL: 4+2n^3+5n^3+2 ANS: 7n^3+6
2. SOL: -4k^4+14+3k^2+-3k^4-14k^2-8 ANS: -7k^4-11k^2+6
3. SOL: -x^4+13x^5+6x^3+6x^3+5x^5+7x^4 ANS: 18x^5+6x^4+12x^3
4. SOL: 13n^2+11n-2n^4+(-13n^2)-3n-6n^4 ANS: -8n^4+8n
5. SOL: -7X^5+14-2x+10x^4+7x+5x^5 ANS: -2x^5+10x^4+5x+14
B.
1. SOL: 4n-3n^3-3n^3+4n ANS: -6n^3+8n
2. SOL: 3a^2+1-4+2a^2 ANS: 5a^2-3
3. SOL: 4r^3+3r^4-r^4-5r^3 ANS: 2r^4-1r^3
4. SOL: 5a+4-5a+3 ANS: 7
5. SOL: 3X^4-3X-3X-3X^4 ANS: -6x
(correct me if im wrong :>)