Advanced chained identity expansions

Advanced chained identity expansions

Secondary 2
TGM Original Questions

Expand and simplify each of the following expressions.

  1. \((2+3b-a)^2\)
  2. \((1+3x)(1-3x)(1+9x^2)\)

Solution:

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Answer:(a) \(a^2+9b^2+4-6ab-4a+12b\); (b) \(1-81x^4\).

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