document.write( "Question 432931: I need help completing the square of a quadratic equation. ]\r
\n" ); document.write( "\n" ); document.write( "(3x^2)+(x)-(1/2)=0\r
\n" ); document.write( "\n" ); document.write( "The farthest I got before getting confused was this:\r
\n" ); document.write( "\n" ); document.write( "(x+1/2)^2=5/12\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Thank you for your time and help! =D
\n" ); document.write( "

Algebra.Com's Answer #300373 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
I need help completing the square of a quadratic equation. ]
\n" ); document.write( "3x^2 + x - \"1%2F2\" = 0
\n" ); document.write( "We need the coefficient of x^2 to be 1, divide equation by 3, then we have
\n" ); document.write( "x^2 + \"1%2F3\"x - \"1%2F6\" = 0
\n" ); document.write( ":
\n" ); document.write( "x^2 + \"1%2F3\"x + ____ = \"1%2F6\"
\n" ); document.write( "Find the value to complete the square; \"%281%2F2%2A1%2F3%29%5E2\" = \"1%2F36\"
\n" ); document.write( "x^2 + \"1%2F3\"x + \"1%2F36\" = \"1%2F6\" + \"1%2F36\"
\n" ); document.write( "x^2 + \"1%2F3\"x + \"1%2F36\" = \"6%2F36\" + \"1%2F36\"
\n" ); document.write( "x^2 + \"1%2F3\"x + \"1%2F36\" = \"7%2F36\"
\n" ); document.write( "Which is
\n" ); document.write( "\"%28x+%2B+1%2F6%29%5E2\" = \"7%2F36\"
\n" ); document.write( "Find the square root of both sides
\n" ); document.write( "x + \"1%2F6\" = +/-\"sqrt%287%2F36%29\"
\n" ); document.write( "extract the perfect square
\n" ); document.write( "x + \"1%2F6\" = +/-\"%281%2F6%29sqrt%287%29\"
\n" ); document.write( "Two solutions
\n" ); document.write( "x = \"-1%2F6\" + \"%281%2F6%29sqrt%287%29\"
\n" ); document.write( "and
\n" ); document.write( "x = \"-1%2F6\" - \"%281%2F6%29sqrt%287%29\"
\n" ); document.write( "we can write it
\n" ); document.write( "x = \"%28-1%2Bsqrt%287%29%29%2F6\"
\n" ); document.write( "and
\n" ); document.write( "x = \"%28-1-sqrt%287%29%29%2F6\"
\n" ); document.write( "
\n" ); document.write( "
\n" );