Question 1208828
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Given z = 3 - 4i and w = 8 + 3i, write each expression in the standard form 
a + bi. 

1. z + z bar

2. w - w bar
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<pre>
(1)  z + z bar = (3-4i) + (3+4i) = 3 + 3 = 6.

     <U>Post-solution note</U> :  z + z bar is always doubled real part of z,
                           and has zero imaginary part.



(2)  w - w bar = (8+3i) - (8-3i) = 3i - (-3i) = 3i + 3i = 6i.

     <U>Post-solution note</U> :  w - w bar is always doubled imaginary part of w  
                           and has zero real part.
</pre>

Solved.