document.write( "Question 143695: the sum of the number and its square root is 6/25,then find the number ?\r
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Algebra.Com's Answer #105310 by shahid(44)![]() ![]() ![]() You can put this solution on YOUR website! let require number be x then following the conditions we get an equation \n" ); document.write( "x+sqrt(x)=6/25 now substitute sqrt(x)=y \n" ); document.write( " then x =y^2 by squaring both sides \n" ); document.write( "y^2+y=6/25 \n" ); document.write( "25y^2+25y=6 25 is multiplied on L.H.S \n" ); document.write( "25y^2+25y-6=0 \n" ); document.write( "25y^2+30y-5y-6=0 \n" ); document.write( "5y(5y+6)-1(5y+6)=0 \n" ); document.write( " (5y+6)(5y-1)=0 \n" ); document.write( "either 5y+6=0 or 5y-1=0 \n" ); document.write( " 5y=-6 5y=1 \n" ); document.write( " y=-6/5 y=1/5 \n" ); document.write( "but from our substitution x=y^2 \n" ); document.write( "either x=(-6/5)^2 or x=(1/5)^2 \n" ); document.write( " x=36/25 or x=1/25 hope this is helpful fo you. \n" ); document.write( " |