Answer:
1. xy × (7y² + 2y - 1)
2. ²/⁷bh
3. -3ab × (3a² + b²)
4. -10 a³ - 15b²
5. 2(45 - y)
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Answer:
1. xy × (7y² + 2y - 1)
2. ²/⁷bh
3. -3ab × (3a² + b²)
4. -10 a³ - 15b²
5. 2(45 - y)