document.write( "Question 257988: They gave me this word problem:
\n" ); document.write( "I'm thinking of a number. The square of this number is the same as the number times 4. What could my number be?\r
\n" ); document.write( "\n" ); document.write( "I'm lost i have no clue how to write the equation. If you help me i would be very greatful. Please and thank you. \n" ); document.write( "
Algebra.Com's Answer #189846 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!

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document.write( "Let the number be x\r\n" );
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document.write( "The other tutor's solution is incorrect because he did the no-no\r\n" );
document.write( "of dividing an equation through by the variable x.  When you do that\r\n" );
document.write( "you lose a solution.  He lost the solution 0. His no-no was as bad\r\n" );
document.write( "if not worse than your misspelling \"grateful\".  J\r\n" );
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document.write( "x squared equals x times four\r\n" );
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document.write( "\"x%5E2=x%2A4\"\r\n" );
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document.write( "\"x%5E2=4x\"\r\n" );
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document.write( "\"x%5E2-4x=0\"\r\n" );
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document.write( "\"x%28x-4%29=0\"\r\n" );
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document.write( "Use the zero factor principle:\r\n" );
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document.write( "Setting the first factor \"x\" equal 0 gives\r\n" );
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document.write( "\"x=0\"\r\n" );
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document.write( "Setting the second factor \"%28x-4%29\" equal to 0 gives:\r\n" );
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document.write( "\"x-4=0\"\r\n" );
document.write( "\"x=4\"\r\n" );
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document.write( "So the number could be 0 or 4.\r\n" );
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document.write( "Edwin
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