Math

(3k^2+ 8k^4 + 2k) + (9k^2-4k^3) - (7k^3-5k^4-6k^2)

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(3k^2+ 8k^4 + 2k) + (9k^2-4k^3) - (7k^3-5k^4-6k^2)

3k^2+ 8k^4+ 2k+ 9k^2-4k^3 - 7k^3 +5k^4 +6k^2

3k^2+ 9k^2+6k^2 + 8k^4+5k^4 + 2k -4k^3- 7k^3

+18k^2 + 13k^4 + 2k -11k^3