SOLUTION: What does the quotient equal? {{{(3+i)/(2-3i)}}}

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Question 164498: What does the quotient equal?
%283%2Bi%29%2F%282-3i%29

Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
What does the quotient equal?
%283%2Bi%29%2F%282-3i%29

Form the conjugate of the denominator:

The denominator is 2-3i so to form
the conjugate we use the first term but
we change the sign of the term in i,
so the conjugate of 2-3i is 2%2B3i
Put that over itself. That is, we form the 
fraction %282%2B3i%29%2F%282%2B3i%29 which is just 1 
in value.

Then we multiply the original expression by
this:

matrix%281%2C3%2C+%283%2Bi%29%2F%282-3i%29%2C+%22%D7%22+%2C+%282%2B3i%29%2F%282%2B3i%29+%29

Put parentheses around everything:



Indicate the multiplication of numerators and denominators:

%28%283%2Bi%29%282%2B3i%29%29%2F%28%282-3i%29%282%2B3i%29%29

Use FOIL on the top and bottom:

%286%2B9i%2B2i%2B3i%5E2%29%2F%284%2B6i-6i-9i%5E2%29

%286%2B11i%2B3i%5E2%29%2F%284%2Bcross%286i%29-cross%286i%29-9i%5E2%29

%286%2B11i%2B3i%5E2%29%2F%284-9i%5E2%29

Now replace the i%5E2's by -1

%286%2B11i%2B3%28-1%29%29%2F%284-9%28-1%29%29

%286%2B11i-3%29%2F%284%2B9%29

%283%2B11i%29%2F13

Make two fractions:

3%2F13+%2B+11i%2F13

To write it in the form A%2BBi,

3%2F13+%2B+11%2F13i

Edwin