Question 243656
<pre><font size = 4 color = "indigo"><b>

{{{(7+9i)(2-5i)}}}

Use FOIL

{{{14-35i+18i-45i^2}}}

Combine middle two terms:

{{{14-17i-45i^2}}}

Use the fact that {{{i^2=-1}}}

{{{14-17i-45(-1)}}}

{{{14-17i+45}}}

{{{59-17i}}}

Edwin</pre>