document.write( "Question 476669: Multiply.(3 + square root 7)(3-Square root 7)
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document.write( "I am trying to solve this but am unsure how to start? \n" );
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Algebra.Com's Answer #326834 by solver91311(24713)![]() ![]() You can put this solution on YOUR website! \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Two ways to go about this.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "1. Just use FOIL like you would on any pair of binomials.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2. Recognize that you are multiplying a pair of conjugate binomials so the result is the difference of two squares.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "John \n" ); document.write( " \n" ); document.write( "My calculator said it, I believe it, that settles it \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |