Recovering squares and products

Recovering squares and products

Secondary 2
TGM Original Questions

If \((x+y)^2=16\) and \((x-y)^2=6\), find

  1. \(x^2+y^2\), and
  2. \(4xy\).

Solution:

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Answer:(a) \(11\); (b) \(10\).

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