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If a − b = −8 and ab = −12, then a³ − b³ =
Verify that x³ + y³ + z³ – 3xyz = 1/2 (x + y + z) [(x – y)² + (y – z)² + (z – x)²]
Factorise : 8x³ + y³ + 27z³ – 18xyz
Factorise each of the following:
Factorise : 27x³ + y³ + z³ – 9xyz
Verify that x³ + y³ + z³ – 3xyz = 1/2 (x + y + z)[(x – y)² + (y – z)² + (z – x)²]
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