document.write( "Question 530292: x2 -2x -13 =0 I need a quadratic formula for this and how to work the problem \n" ); document.write( "
Algebra.Com's Answer #349995 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! x^2 -2x -13 = 0 \n" ); document.write( "---- \n" ); document.write( "x = [2 +- sqrt(4 - 4*1*-13)]/2 \n" ); document.write( "--- \n" ); document.write( "x = [2 +- sqrt(4+52)]/2 \n" ); document.write( "--- \n" ); document.write( "x = [2 +- sqrt(56)]/2 \n" ); document.write( "--- \n" ); document.write( "x = [2 +- 2sqrt(14)]/2 \n" ); document.write( "--- \n" ); document.write( "x = 1 +- sqrt(14) \n" ); document.write( "============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------- \n" ); document.write( " |