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Collecting like terms

Stuck? Read the notes

	Answers
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Simplify the following, where possible, by collecting the like terms.

1. 8y + 6x + 7y + 2x
2. 9p + 8x -2p -3x
3. 6x + 5z -3x -7z
4. 9pz + 4zp
5. 5z + 8z^{2} + 3z + 2z^{2}
6. 3y + 2
7. 5q + 4qz -2q -6zq
8. 5y + 11x
9. 8q -5
10. 15qx + 17px + 11pz + 10xp
11. x + 9x^{2} + 8x^{3} -5x
12. 4q + 5z -8q -7z