document.write( "Question 48581: 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
\n" ); document.write( "\n" ); document.write( " 2x^2 + x - 1 = 0\r
\n" ); document.write( "\n" ); document.write( " 4/3x^2 - 2x + 3/4 = 0\r
\n" ); document.write( "\n" ); document.write( " 2x^2 + 5x + 5 = 0\r
\n" ); document.write( "\n" ); document.write( " 3z^2 + z - 1 = 0\r
\n" ); document.write( "\n" ); document.write( " m^2 + m + 1 = 0
\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #32161 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
2x^2 + x - 1 = 0
\n" ); document.write( "I'll do one and let you do the rest:
\n" ); document.write( "1st: Identify a,b,c for the problem:
\n" ); document.write( "In this case a=2,b=1,c=-1
\n" ); document.write( "2nd: Evaluate b^2-4ac
\n" ); document.write( "In this case you get 1^2-4(2)(-1) =1+8=9
\n" ); document.write( "3rd: If the value is > there are two real unequal roots
\n" ); document.write( "If the value is 0 there are two real equal roots
\n" ); document.write( "If the value is <0 there are two uneqal complex roots
\n" ); document.write( "In this case, since the value is 9, there are two real unequal roots.\r
\n" ); document.write( "\n" ); document.write( "I'll leave the rest to you.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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