Margföldun – Æfing 3.3

  1. (x + 2)(x – 4)
  2. (x + 1)x – (x – 2)(x + 1)
  3. 5(x + 7) – 3(2x – 1)
  4. (x + 1)(x – 6)
  5. x(2x + 3) + 2(x -1)
  6. (r + s + 1)(r + 1)
  7. 8(v + s + x) – 2(3v – 4s + 2x)