To identify the pair of equivalent expressions, let's simplify each pair.
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3x + 2x simplifies to 5x.
- x²(3 + 2) simplifies to 5x².
These are not equivalent.
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2(x + 3) simplifies to 2x + 6.
- 2x + 6 is already in its simplest form.
These are equivalent.
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2x + 2 and 2(x + 2).
- 2x + 2 is already in its simplest form.
- 2(x + 2) simplifies to 2x + 4.
These are not equivalent.
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−3(x + 2) simplifies to −3x - 6.
- −3x − 3 is in its simplest form.
These are not equivalent.
Only the second pair 2(x + 3) and 2x + 6 are equivalent expressions.