document.write( "Question 362381: Given f(x) = -2x^2 + 12x - 5 I must complete the square and put in the form y = a(x - h)^2 + k\r
\n" );
document.write( "\n" );
document.write( "-2x^2 + 12x = 5\r
\n" );
document.write( "\n" );
document.write( "x^2 - 6x = -5/2\r
\n" );
document.write( "\n" );
document.write( "x^2 - 6x + 9 = 13/2\r
\n" );
document.write( "\n" );
document.write( "(x - 3)^2 = 13/2\r
\n" );
document.write( "\n" );
document.write( "x - 3 = sqrt(13/2)\r
\n" );
document.write( "\n" );
document.write( "x = 3 +/- sqrt(13/2)\r
\n" );
document.write( "\n" );
document.write( "From here, how I would put this into the standard form? I have h = -b/2a = 3 and k = (c-b)^2/4a = -289/8 (?)\r
\n" );
document.write( "\n" );
document.write( "Not sure how I would enter x, wouldn't there be two of them?\r
\n" );
document.write( "\n" );
document.write( "Thanks for any help you can provide :-) \n" );
document.write( "
Algebra.Com's Answer #258237 by Fombitz(32388)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |