Margföldun – Æfing 3.6

  1. (16a2 + 9)(4a – 3)(4a + 3)
  2. (5x + 1)(25x2 – 1)(5x – 1)
  3. (s + 2)(s2 – 4)(s – 2)
  4. (p + 1)2 – (p – 1)2
  5. 2(x + 3)2 + 2(x – 3)2
  6. (p + q)2 + (p + q)(p – q)
  7. ((3x + 2)(3x – 2))2