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

Algebra.Com's Answer #322742 by mananth(16949) $\"\"$ $\"About$

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$\"+x+%2B+sqrt+%28x%29+=+42+\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"sqrt+%28x%29+=+42-x+\"$ \r
\n" ); document.write( "\n" ); document.write( "square both sides\r
\n" ); document.write( "\n" ); document.write( " $\"x=+%2842-x%29%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=+42%5E2-84x%2Bx%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x%5E2-85x%2B1764\"$ \r
\n" ); document.write( "\n" ); document.write( "Find the roots of the equation by quadratic formula
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\n" ); document.write( "a= 1 b= -85 c= 1764
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\n" ); document.write( "b^2-4ac= 7225 - -7056
\n" ); document.write( "b^2-4ac= 169 $\"sqrt%28%09169%09%29\"$ = 13
\n" ); document.write( " $\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
\n" ); document.write( " $\"x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
\n" ); document.write( "x1=( 85 + 13 )/ 2
\n" ); document.write( "x1= 49
\n" ); document.write( "x2=( 85 -13 ) / 2
\n" ); document.write( "x2= 36 \r
\n" ); document.write( "\n" ); document.write( "(49,36)
\n" ); document.write( "m.ananth@hotmail.ca
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