Factorise
1.a²+ 14a + 48
2.m² – 10m – 56
3.x⁴ – (x – y)⁴
4. 4x² + 9 – 12x – a² – b² + 2ab
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Answer:
1. 14a³ + 48
2. 10m³ - 56
3. x⁴ - x⁴ - y⁴
x⁸ - y⁴
4. 48x³ + 9 - 2a³b³
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