Identify the properties used for the first two steps in simplifying 6ab2 + 4a2b – 3ab2 + 3a2b – 2a2b2. 6ab2+4a2b-3ab2+3a2b-2a2b2 = 4a2b+3a2b-3ab2+6ab2-2a2b2

The terms have been reordered: 4a²b and 3a²b move ahead of −3ab² and 6ab², while the terms themselves remain unchanged. Reordering terms in a sum uses the commutative property of addition. The associative property changes grouping, and the distributive property expands or factors multiplication over addition.

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