document.write( "Question 59581: I can't seem to get these right - help would be appreciated:\r
\n" );
document.write( "\n" );
document.write( "(Not necessary to find the roots - just determine the number & type of solution) use a discriminant to determine the number of solutions for the quadratic equasions - and if the solutions are real or complex.\r
\n" );
document.write( "\n" );
document.write( "a. 2x^2+x-1=0\r
\n" );
document.write( "\n" );
document.write( "b. 4/3x^2-2x+3/4=0\r
\n" );
document.write( "\n" );
document.write( "c. m^2+m+1=0\r
\n" );
document.write( "\n" );
document.write( "Thank you very much! \n" );
document.write( "
Algebra.Com's Answer #40850 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! a. 2x^2+x-1=0 \n" ); document.write( "discrim=1^2-4*2*-1=9; 2 real zeroes \n" ); document.write( "--------------- \n" ); document.write( "b. 4/3x^2-2x+3/4=0 \n" ); document.write( "multiply thru by 12 to get: \n" ); document.write( "16x^2-24x+9=0 \n" ); document.write( "discrim= 24^2-4*16*9=0; 2 identical real zeroes \n" ); document.write( "-------------- \n" ); document.write( "c. m^2+m+1=0 \n" ); document.write( "discrim=1^2-4*1*1=-3 ; 2 complex zeroes. \n" ); document.write( "------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |