Þáttun – Æfing 4.2 – Svör

  1. (a + b)2
  2. (3x – y)2
  3. (2r + s)2
  4. (3c – 2)2
  5. (4v + 1)2
  6. (2pq – 1)2
  7. (5z – 2)2
  8.  (9a + 3)2