document.write( "Question 717998: 5x^2-2x-2=0 solve by completing the square \n" ); document.write( "
Algebra.Com's Answer #440650 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! 5x^2-2x-2=0 solve by completing the square \n" ); document.write( "-------- \n" ); document.write( "5(x^2-(2/5)+ ? = 2 + 5*? \n" ); document.write( "---- \n" ); document.write( "5(x^2 -(2/5)x + (1/5)^2) = 2 + 5(1/5)^2 \n" ); document.write( "------- \n" ); document.write( "5(x-(1/5))^2 = 11/5 \n" ); document.write( "----- \n" ); document.write( "(x-(1/5)^2 = 11/25 \n" ); document.write( "----- \n" ); document.write( "x-(1/5) = sqrt(11)/5 or x - (1/5)= -sqrt(11)/5 \n" ); document.write( "=============== \n" ); document.write( "x = (1+sqrt(11)/5 or x = (1-sqrt(11))/5 \n" ); document.write( "==================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "==================== \n" ); document.write( " |