Combining scaled quadratic expressions

Combining scaled quadratic expressions

Secondary 2
TGM Original Questions

Expand and simplify each of the following expressions.

  1. \(4(2x^2+5x-3)-3(x^2-2x+4)\)
  2. \(-6x(2-x)+3x(3x-4)\)
  3. \(-5g(2-4g)+3(g^2-2g+5)\)
  4. \(2h(3h-5)-3h(4-2h)+2h\)

Solution:

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Answer:(a) \(5x^2+26x-24\); (b) \(15x^2-24x\); (c) \(23g^2-16g+15\); (d) \(12h^2-20h\).

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