document.write( "Question 108819: solve using quadratic equation\r
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document.write( "4x²+7x-15=0 \n" );
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Algebra.Com's Answer #79314 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! solve using quadratic equation\r \n" ); document.write( "\n" ); document.write( "4x²+7x-15=0\r \n" ); document.write( "\n" ); document.write( "x = [-7 +- sqrt(49-4*4*-15)]/8\r \n" ); document.write( "\n" ); document.write( "x = [ -7 +- sqrt289)]/8\r \n" ); document.write( "\n" ); document.write( "x = [-7 +- 17]/8\r \n" ); document.write( "\n" ); document.write( "x = -24/8 or x = 10/8\r \n" ); document.write( "\n" ); document.write( "x = -3 or x = 5/4 \n" ); document.write( "==================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |