Expanding binomial products

Expanding binomial products

Secondary 2
TGM Original Questions

Expand each of the following expressions.

  1. \((a - 5)(a + 8)\)
  2. \((2b + 3)(b - 7)\)
  3. \((3c - 2)(2c + 5)\)
  4. \((5d - 4)(-3d + 2)\)
  5. \((-2e + 6)(-3e + 4)\)
  6. \((3f + 5)(2f - 1)\)

Solution:

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Answer:(a) \(a^{2} + 3a - 40\); (b) \(2b^{2} - 11b - 21\); (c) \(6c^{2} + 11c - 10\); (d) \(-15d^{2} + 22d - 8\); (e) \(6e^{2} - 26e + 24\); (f) \(6f^{2} + 7f - 5\).

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