Wednesday, May 22, 2013

Factor: 8a^2 - 26a + 15

We need a pair of numbers that add to -26 and multiply to 120. After searching we find -20 and -6. 

%0D%0A8a%5E2-20a-6a%2B15%0D%0A 
rearranging and placing parentheses... 
%0D%0A%288a%5E2-20a%29-%286a-15%29%0D%0A 
removing gcds and factoring... 

%0D%0A4a%282a-5%29-3%282a-5%29=%284a-3%29%282a-5%29%0D%0A 


:)
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