document.write( "Question 367599: I am not sure that I chose the correct topic for the question. It is algebriac, but I am not sure of its specific topic. Anyway, here is the question:
\n" ); document.write( "(r+2t)^3+(r-7t)^3\r
\n" ); document.write( "\n" ); document.write( "The answer is (2r-5t)(r^2+5rt+67t^2)\r
\n" ); document.write( "\n" ); document.write( "I cannot figure out how they got the 67t^2!
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Algebra.Com's Answer #262008 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
(r+2t)^3+(r-7t)^3
\n" ); document.write( "we use the formula of sum of two cubes
\n" ); document.write( "\"a%5E3%2Bb%5E3=+%28a%2Bb%29%28a%5E2-ab%2Bb%5E2%29\"
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\n" ); document.write( "\"%28r%2B2t%2Br-7t%29%28%28r%2B2t%29%5E2+-%28r%2B2t%29%28r-7t%29%2B%28r-7t%29%5E2%29\"
\n" ); document.write( "\"%282r-5t%29%28r%5E2%2B4tr%2B4t%5E2-%28r%5E2-5t-14t%5E2%29%2Br%5E2-14tr%2B49t%5E2%29\"
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\n" ); document.write( "\"%282r-5t%29%28r%5E2%2B4tr%2B4t%5E2-r%5E2%2B5tr%2B14t%5E2%2Br%5E2-14tr%2B49t%5E2%29\"
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\n" ); document.write( "\"%282t-5r%29%28r%5E2-5tr%2B67t%5E2%29\"\r
\n" ); document.write( "\n" ); document.write( "m.ananth@hotmail.ca
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