Question 50729
<pre><font size = 5 color = "burgundy2"><b>       (4 + 3i)²

    (4 + 3i)(4 + 3i)

       Use FOIL

  16 + 12i + 12i + 9i²

Combine two middle terms
          and
Use the fact that i² = -1

    16 + 24i + 9(-1) 

      16 + 24i - 9

        7 + 24i

Edwin