Exact arithmetic from algebraic forms

Exact arithmetic from algebraic forms

Secondary 2
TGM Original Questions

Without using a calculator, evaluate each of the following.

  1. \(31^2+558+81\)
  2. \(307^2-293^2\)
  3. \(2980\times3020\)

Solution:

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Answer:(a) \(1600\); (b) \(8400\); (c) \(8,999,600\).

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