document.write( "Question 975880: how to factor 72 into a product of prime factors?\r
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Algebra.Com's Answer #597558 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Make a factor tree.  Break an integer into the product of two\r\n" );
document.write( "smaller integers.  Stop when you can't do that anymore. Then\r\n" );
document.write( "put all the \"dead ends\" together: \r\n" );
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document.write( "Break 72 into 9×8\r\n" );
document.write( "Break 9 into 3×3 and 8 into 2×4\r\n" );
document.write( "Break 4 into 2×2.\r\n" );
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document.write( "                         72\r\n" );
document.write( "                       /    \\r\n" );
document.write( "                      9   ×  8\r\n" );
document.write( "                     / \    / \ \r\n" );
document.write( "                    3 × 3  2 × 4\r\n" );
document.write( "                              / \  \r\n" );
document.write( "                             2 × 2\r\n" );
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document.write( "72 = 3×3×2×2×2 = 32×23\r\n" );
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document.write( "Edwin
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