( 3q)² or ( 3q+1)² or (3q+ 2)²
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Answer:
- ( 3q)² = 9q²
- (3q+1)² = (3q) ² + 2 ( 3q)(1) + (1)²
= 9q² + 6q + 1
- (3q+2)² = (3q) ² + 2 ( 3q)(2) + (2)²
= 9q² + 12q + 4
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