document.write( "Question 36109: use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. Note: It is not necessary to find the roots; just determine the number and types of solutions.\r
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document.write( "x^2 + 6x - 7 = 0 \n" );
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Algebra.Com's Answer #22105 by Prithwis(166)![]() ![]() ![]() You can put this solution on YOUR website! Discriminant = (b^2 - 4ac) for ax^2+bx+c \n" ); document.write( "Here a = 1, b=6 and c = -7 \n" ); document.write( "b^2 - 4ac = 36+28 = 64 \n" ); document.write( "If b^2 - 4ac !=0, there are two solutions of the equation. \n" ); document.write( "If b^2 - 4ac > 0, both the roots are real. \n" ); document.write( "Here the discriminant is 64 (>0); so there are two real solutions of the given equation. \n" ); document.write( " |