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secondary 2 | Maths
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Date Posted: 4 years ago
Views: 298
snell
Snell
4 years ago
sq of x = (x)² = x²

sq of 2/x = (2/x)² = 4/x²

2 . x . (2/x) = 4

ans:
x² + 4 + 4/x²

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Ng Wei Xian
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