SOLUTION: How do you simplify this expression? w2 - 9/w2 - 4w - 21

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Question 750917: How do you simplify this expression?
w2 - 9/w2 - 4w - 21
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
%28w%5E2+-+9%29%2F%28w%5E2+-+4w+-+21%29

%28%28w-3%29%28w%2B3%29%29%2F%28%28w-7%29%28w%2B3%29%29

%28%28w-3%29highlight%28%28w%2B3%29%29%29%2F%28%28w-7%29highlight%28%28w%2B3%29%29%29

%28%28w-3%29cross%28%28w%2B3%29%29%29%2F%28%28w-7%29cross%28%28w%2B3%29%29%29

%28w-3%29%2F%28w-7%29

Final Answer: %28w-3%29%2F%28w-7%29