document.write( "Question 65842This question is from textbook An Incremental Development
\n" ); document.write( ": solve\r
\n" ); document.write( "\n" ); document.write( "square root of x - 15 + 1 = the square root of x \n" ); document.write( "

Algebra.Com's Answer #46607 by funmath(2933) $\"\"$ $\"About$

You can put this solution on YOUR website!
solve\r
\n" ); document.write( "\n" ); document.write( "square root of x - 15 + 1 = the square root of x
\n" ); document.write( " $\"sqrt%28x-15%29%2B1=sqrt%28x%29\"$
\n" ); document.write( " $\"sqrt%28x-15%29%2B1-1=sqrt%28x%29-1\"$
\n" ); document.write( " $\"sqrt%28x-15%29=sqrt%28x%29-1\"$
\n" ); document.write( " $\"%28sqrt%28x-15%29%29%5E2=%28sqrt%28x%29-1%29%5E2\"$
\n" ); document.write( " $\"x-15=sqrt%28x%5E2%29-2sqrt%28x%29%2B1\"$
\n" ); document.write( " $\"x-15=x-2sqrt%28x%29%2B1\"$
\n" ); document.write( " $\"x-x-15-1=x-x-2sqrt%28x%29%2B1-1\"$
\n" ); document.write( " $\"-16=-2sqrt%28x%29\"$
\n" ); document.write( " $\"-16%2F-2=-2sqrt%28x%29%2F-2\"$
\n" ); document.write( " $\"8=sqrt%28x%29\"$
\n" ); document.write( " $\"%288%29%5E2=%28sqrt%28x%29%29%5E2\"$
\n" ); document.write( " $\"64=x\"$
\n" ); document.write( "check to make sure that this is not extraneous.
\n" ); document.write( " $\"sqrt%2864-15%29%2B1=sqrt%2864%29\"$
\n" ); document.write( " $\"sqrt%2849%29%2B1=8\"$
\n" ); document.write( " $\"7%2B1=8\"$
\n" ); document.write( " $\"8=8\"$
\n" ); document.write( "The solution $\"highlight%28x=64%29\"$ is valid.
\n" ); document.write( "Happy Calculating!!!! \n" ); document.write( "

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