document.write( "Question 63369: sqrt x+7 + sqrt x+16=9
\n" ); document.write( "thank you \n" ); document.write( "
Algebra.Com's Answer #44101 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
sqrt(x+7) + sqrt(x+16) = 9
\n" ); document.write( "Square both sides to get:
\n" ); document.write( "(x+7)+(x+16)+2sqrt(x^2+23x+112)=81
\n" ); document.write( "2x+23+ sqrt(------------)=81
\n" ); document.write( "sqrt(---------) = -2x+58
\n" ); document.write( "------------
\n" ); document.write( "Square both sides again to get:
\n" ); document.write( "x^2+23x+112 = 4x^2-232x+3364
\n" ); document.write( "3x^2-255x+3252=0
\n" ); document.write( "x^2-85x+1084=0
\n" ); document.write( "x=[85+-sqrt(7225-4*1084)]/2
\n" ); document.write( "x=[85+-sqrt(2889)]/2
\n" ); document.write( "x=[85+53.75]/2=69.37
\n" ); document.write( "or
\n" ); document.write( "x=[85-53.75]/2=15.625
\n" ); document.write( "-------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );