SOLUTION: (�8 � 6i) � (5 + 3i) = �8 � 6i � 5 + 3i = �8 � 5 � 6i + 3i = �13 � 3i Why is this wrong? How to solve correctly?

Question 718525: (�8 � 6i) � (5 + 3i)
= �8 � 6i � 5 + 3i
= �8 � 5 � 6i + 3i
= �13 � 3i
Why is this wrong?
How to solve correctly?

Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
First step is wrong. Subtract a quantity in parenthese means you are subtracting each term that is grouped.

AMP Parsing Error of [(�8�6i)�(5+3i)]: Invalid expression '�8�6\i)�(5+3\i)': syntax error at /home/ichudov/project_locations/algebra.com/templates/Algebra/Expression.pm line 203. .
= �8 � 6i � 5 + 3i SHOULD BE

Another way to see this is
=
=

(No reason why the very first line above will not render.)
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