Centred-product evaluation

Centred-product evaluation

Secondary 2
TGM Original Questions

Using a suitable algebraic identity, evaluate each of the following.

  1. \(4004\times3996\)
  2. \(925\times875\)
  3. \(73015^2-73010\times73020\)
  4. \(\frac{365^2-360\times370}{5}\)

Solution:

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Answer:(a) \(15,999,984\); (b) \(809,375\); (c) \(25\); (d) \(5\).

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