document.write( "Question 470569: $\"+x+%2B+sqrt+%28x%29+=+42+\"$ \n" ); document.write( "

Algebra.Com's Answer #322748 by robertb(5830) $\"\"$ $\"About$

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$\"sqrt%28x%29+=+42+-+x\"$
\n" ); document.write( "==> $\"x+=+%2842+-+x%29%5E2\"$ <==> $\"x+=+1764+-+84x+%2B+x%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( "==> $\"X%5E2+-+85x+%2B+1764+=+0\"$ ==> (x - 36)(x - 49) = 0\r
\n" ); document.write( "\n" ); document.write( "==> x = 36, x = 49.\r
\n" ); document.write( "\n" ); document.write( "Eliminate the second x-value, because it doesn't satisfy the original equation.\r
\n" ); document.write( "\n" ); document.write( "x = 36 satisfies the original equation. Hence it is the final answer. \n" ); document.write( "

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