Question
Factorise:
Evaluate {(999)2 - 1}
✓
Answer
{(999)2 - 1}
= {(999)2 - (1)2}
= {(999 - 1)(999 + 1)}
= 998 × 1000
= 998000
= {(999)2 - (1)2}
= {(999 - 1)(999 + 1)}
= 998 × 1000
= 998000
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