document.write( "Question 420301: I need help solving this quadratic equation and leaving it in radical form I don't know how to set it to zero? I know how to use the quadratic formula so I need help on how to set the equation to zero so I can solve using the quadratic formula? (x+8)(x-4)=-3(2x+5) thank you for your help \n" ); document.write( "
Algebra.Com's Answer #293734 by mananth(16946)![]() ![]() You can put this solution on YOUR website! (x+8)(x-4)=-3(2x+5)\r \n" ); document.write( "\n" ); document.write( "x^2-4x+8x-32=-6x-15 \n" ); document.write( "x^2+4x-32+6x+15=0 \n" ); document.write( "x^2+10x-17=0\r \n" ); document.write( "\n" ); document.write( "Find the roots of the equation by quadratic formula\r \n" ); document.write( "\n" ); document.write( "a= 1 , b =10 , c =-17 .\r \n" ); document.write( "\n" ); document.write( "b^2-4ac=168\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "x1=1.48 \n" ); document.write( "... \n" ); document.write( " \n" ); document.write( "x2=-11.48 \n" ); document.write( " |