Question: Simplify by combining like terms. 1. (16pq - 7p2) + (5pq + 5p2) 2. (3x3 + 4x2y2) + (3x2y2 - 7x3) 3. (4m2 - 3n2

Simplify by combining like terms.
1. (16pq - 7p2) + (5pq + 5p2)
2. (3x3 + 4x2y2) + (3x2y2 - 7x3)
3. (4m2 - 3n2 + 5) - (3m2 + 4n2 + 8)
4. (4rs - 2r2s - 11rs2) - (11rs2 - 2rs + 4r2s)

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