document.write( "Question 992036: I am not having good luck with this answer. Please help!!!\r
\n" ); document.write( "\n" ); document.write( "\"2x-3=sqrt%2830-7x%29\" \r
\n" ); document.write( "\n" ); document.write( "I squared off the expression 2x-3 and used the FOIL method to get this:\r
\n" ); document.write( "\n" ); document.write( "4x-12x+9=30-7x I continue by subtracting 4x-12x to get -8x+9=30-7x. Here's where I think I lose it.
\n" ); document.write( "Somewhere I'm missing something because I keep getting x=21 but the answer key says {3}
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Algebra.Com's Answer #611683 by macston(5194)\"\" \"About 
You can put this solution on YOUR website!
First step: Square both sides:
\n" ); document.write( "(2x-3)^2
\n" ); document.write( ".
\n" ); document.write( "FOIL:Multiply first terms:
\n" ); document.write( "\"2x%2A2x=4x%5E2\" \"not\" \"4x\"
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\n" ); document.write( "Continued:
\n" ); document.write( "\"2x-3=sqrt%2830-7x%29\"
\n" ); document.write( "\"%282x-3%29%5E2=30-7x\"
\n" ); document.write( "\"4x%5E2-12x%2B9=30-7x\"
\n" ); document.write( "\"4x%5E2-5x-21=0\"
\n" ); document.write( "\"%284x%2B7%29%28x-3%29=0\"
\n" ); document.write( "\"4x%2B7=0\" \"OR\" \"x-3=0\"
\n" ); document.write( "\"4x=-7\" \"OR\" \"x=3\"
\n" ); document.write( "\"x=-7%2F4\" \"OR\" \"x=3\"
\n" ); document.write( "The domain of the original is:
\n" ); document.write( "\"3%2F2\"<\"x\"<\"30%2F7\"
\n" ); document.write( "so -7/4 is eliminated, leaving:
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\n" ); document.write( "ANSWER:x=3 \r
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