Factorise: 1029 - 3x3 - Vidyadip

Question

Factorise:
1029 - 3x³

✓

Answer

1029 - 3x³
= 3(343 - x³)
= 3[(7)³ - x³]
= 3[(7 - x)(7² + 7x + x²)]
= 3(7 - x)(49 + 7x + x²)

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