Saturday, August 3, 2013

solve. 6c^2-11c-72=0

6c^2-11c-72=0 

%28%286c-27%29%2F%286%29%29%28%286c%2B16%29%2F%286%29%29=0%0D%0A 

%28c-9%2F2%29%28c%2B8%2F3%29=0%0D%0A 

c=9/2 or c=-8/3

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