document.write( "Question 36095: 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( "2x^2 + x - 1 = 0 \n" );
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Algebra.Com's Answer #22509 by venugopalramana(3286)![]() ![]() You can put this solution on YOUR website! 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. \n" ); document.write( "2x^2 + x - 1 = 0...EQN. IS AX^2+BX+C=0...A=2..B=1...C=-1 \n" ); document.write( "DISCRIMINANT = B^2-4AC..... \n" ); document.write( "1^2-4*2*(-1)=1+8=9=POSITIVE AND PERFECT SQUARE \n" ); document.write( "HENCE ROOTS ARE REAL AND DISTINCT AND RATIONAL \n" ); document.write( " |