document.write( "Question 384076: I don't understand this part. Where do you use the common factor in an expression consisting of various terms? \r
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document.write( "The actual question is What is a common factor? Where do you use the common factor in an expression consisting of various terms? What is the Greatest Common Factor?\r
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Algebra.Com's Answer #271867 by Theo(13342)![]() ![]() You can put this solution on YOUR website! A common factor is a factor that can be divided evenly into each of the terms of an expression.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Take the expression 9 + 27 + 54.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3 can be divided evenly into 9 and into 27 and into 54, so 3 is a common factor.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "9 can be divided evenly into 9 and into 27 and into 54, so 9 is also a common factor.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The greatest common factor is 9 because that is the largest factor that can be divided evenly into each of the terms of the expression.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You use the common factor in an expression consisting of various terms in order to simplify the expression so that it can be solved easier.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Consider the expression (3x^3 - 17x^2 + 18x - 12) / (x^2 - 5x + 6)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Consider that you know that the numerator in this expression is equal to (x^2 - 5x + 6) * (3x-2)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The expression becomes ((3x-2) * (x^2 - 5x + 6)) / (x^2 - 5x + 6).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the common factor of (x^2 - 5x + 6) cancels out and you are left with a result of (3x-2).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Knowing what the common factor is made the division much simpler than not knowing what the common factor is.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |