document.write( "Question 179712: Solve. (Be sure to check your solution):
\n" ); document.write( "sqrt(2y + 7) + 4 = y \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #134627 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"sqrt%282y%2B7%29%2B4=y\"$
\n" ); document.write( " $\"sqrt%282y%2B7%29%2B4-4=y-4\"$
\n" ); document.write( " $\"sqrt%282y%2B7%29=y-4\"$
\n" ); document.write( " $\"2y%2B7=%28y-4%29%5E2\"$
\n" ); document.write( " $\"2y%2B7=y%5E2-8y%2B16\"$
\n" ); document.write( " $\"y%5E2-10y%2B9=0\"$
\n" ); document.write( " $\"%28y-9%29%28y-1%29=0\"$
\n" ); document.write( "Two solutions:
\n" ); document.write( " $\"x-9=0\"$
\n" ); document.write( " $\"x=9\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( " $\"x-1=0\"$
\n" ); document.write( " $\"x=1\"$
\n" ); document.write( "Let's check both answers.
\n" ); document.write( " $\"sqrt%282y%2B7%29%2B4=y\"$
\n" ); document.write( " $\"sqrt%282%289%29%2B7%29%2B4=9\"$
\n" ); document.write( " $\"sqrt%2818%2B7%29%2B4=9\"$
\n" ); document.write( " $\"sqrt%2825%29%2B4=9\"$
\n" ); document.write( " $\"5%2B4=9\"$
\n" ); document.write( " $\"9=9\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( " $\"sqrt%282%281%29%2B7%29%2B4=1\"$
\n" ); document.write( " $\"sqrt%282%2B7%29%2B4=1\"$
\n" ); document.write( " $\"sqrt%289%29%2B4=1\"$
\n" ); document.write( " $\"-3%2B4=1\"$
\n" ); document.write( " $\"1=1\"$ \n" ); document.write( "

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