Simplifying multivariable products

Simplifying multivariable products

Secondary 2
TGM Original Questions

Expand and simplify each of the following expressions.

  1. \((x-2y)(4x+y)-3xy\)
  2. \(2x(x+3y)(2x-y)\)
  3. \(3a(2a-b)-2(a^2+3ab-b^2)\)
  4. \((2m-n)(3m+4n)+2m(n-m)\)

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Answer:(a) \(4x^2-10xy-2y^2\); (b) \(4x^3+10x^2y-6xy^2\); (c) \(4a^2-9ab+2b^2\); (d) \(4m^2+7mn-4n^2\).

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