Þáttun – Æfing 4.3 – Svör

  1. (4x – 2)2
  2. (p – q)(p + q)
  3. (B – 3x)(B + 3x)
  4. (4r – 1)(4r + 1)
  5. (6 – y)(6 + y)
  6. (5x – 2b)(5x + 2b)
  7. (3z – 5s)(3z + 5s)
  8. (x2 – 3y)(x2 + 3y)
  9. (x3 – 1)(x3 + 1)