Question

Please give me the answers.
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Answer 1

Step-by-step explanation:

1. 2p^2+9q^2+2pq+6
2. 11x^3+2x^2-29x+7
3. 8l^2-4m^2-9n^2+15lm-4mn+3ln
4. 3ab-7bc
5. 9x^2-5y^2-2xy+9