document.write( "Question 38849This question is from textbook Elementary Algebra
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document.write( ": I need help finding the LCM for:\r\n" );
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document.write( "2x² + 5x + 2, 2x² - x - 1
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Algebra.Com's Answer #24322 by AnlytcPhil(1806)![]() ![]() You can put this solution on YOUR website! I need help finding the LCM for:\r\n" ); document.write( "\r\n" ); document.write( "2x² + 5x + 2,2x² - x - 1\r\n" ); document.write( "\r\n" ); document.write( "Factor them both\r\n" ); document.write( "\r\n" ); document.write( "(x + 2)(2x + 1), (2x + 1)(x - 1)\r\n" ); document.write( "\r\n" ); document.write( "To find the LCM\r\n" ); document.write( "\r\n" ); document.write( "1. Write the first expression\r\n" ); document.write( "\r\n" ); document.write( " (x + 2)(2x + 1)\r\n" ); document.write( "\r\n" ); document.write( "2. Look at the next expression and ask yourself:\r\n" ); document.write( " Does the second expression contain any factor\r\n" ); document.write( " which does not appear in what you just wrote down? \r\n" ); document.write( " If the answer is yes, then tack it on.\r\n" ); document.write( "\r\n" ); document.write( " In this case, the expression (x - 1) is not\r\n" ); document.write( " included, so we tack that on and get\r\n" ); document.write( "\r\n" ); document.write( " (x + 2)(3x + 1)(x - 1)\r\n" ); document.write( "\r\n" ); document.write( "3. If there are more than 2 expressions repeat\r\n" ); document.write( " step 2.\r\n" ); document.write( "\r\n" ); document.write( " There are no more expresions, so the answer is\r\n" ); document.write( "\r\n" ); document.write( " LCM = (x + 2)(3x + 1)(x - 1)\r\n" ); document.write( "\r\n" ); document.write( "Edwin\r\n" ); document.write( "AnlytcPhil@aol.com\n" ); document.write( " |