Algebra.Com's Answer #134251 by Edwin McCravy(20056)  You can put this solution on YOUR website! Can you please help me solve this radical equaqtion?  \n" );
document.write( "This problem did not come from a text book, it came from a worksheet.\r \n" );
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document.write( "I began by isolating the radical:  \n" );
document.write( "Then I squared each side to eliminate the radical:  \n" );
document.write( "Which gave me:  \n" );
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document.write( "There's your error!\r\n" );
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document.write( " IS NOT !\r\n" );
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document.write( "When there are two terms added to be squared, you must\r\n" );
document.write( "write it in parentheses TWICE and multiply it by itself, \r\n" );
document.write( "using FOIL. Also you must remember that when you square \r\n" );
document.write( "a negative, such as you get a positive ,\r\n" );
document.write( "not :\r\n" );
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document.write( "Therefore when you got to\r\n" );
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document.write( "the next step should have been\r\n" );
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document.write( "Then you must use \"FOIL\":\r\n" );
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document.write( "You don't need to write that . I just\r\n" );
document.write( "put it there to remind you that when you square\r\n" );
document.write( "a negative you get a positive.\r\n" );
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document.write( "Then move everything right and you get:\r\n" );
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document.write( "or if you like the 0 on the right, just swap sides:\r\n" );
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document.write( "Then it factors nicely as\r\n" );
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document.write( "Then you get the solutions and \r\n" );
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document.write( "But you must check these, because when you square\r\n" );
document.write( "both sides or multiply both sides by a variable,\r\n" );
document.write( "you may get extraneous solutions:\r\n" );
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document.write( "Checking \r\n" );
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document.write( "That doesn't check, so is not a \r\n" );
document.write( "genuine solution, but is called \"extraneous\".\r\n" );
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document.write( "Checking \r\n" );
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document.write( "That checks. So is the only solution\r\n" );
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document.write( "Edwin \n" );
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