Þáttun – Æfing 4.2 – Þættið

  1. a2 + 2ab + b2
  2. 9x2 – 6xy + y2
  3. 4r2 + 4rs + s2
  4. 9c2 – 12c + 4
  5. 16v2 + 8v + 1
  6. 4p2q2 – 4pq +1
  7. 25z2 – 20z + 4
  8. 9a2 + 18a + 9