document.write( "Question 59581: I can't seem to get these right - help would be appreciated:\r
\n" ); document.write( "\n" ); document.write( "(Not necessary to find the roots - just determine the number & type of solution) use a discriminant to determine the number of solutions for the quadratic equasions - and if the solutions are real or complex.\r
\n" ); document.write( "\n" ); document.write( "a. 2x^2+x-1=0\r
\n" ); document.write( "\n" ); document.write( "b. 4/3x^2-2x+3/4=0\r
\n" ); document.write( "\n" ); document.write( "c. m^2+m+1=0\r
\n" ); document.write( "\n" ); document.write( "Thank you very much!
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Algebra.Com's Answer #40854 by funmath(2933)\"\" \"About 
You can put this solution on YOUR website!
(Not necessary to find the roots - just determine the number & type of solution) use a discriminant to determine the number of solutions for the quadratic equasions - and if the solutions are real or complex.
\n" ); document.write( ":
\n" ); document.write( "The discriminant of a quadratic equation written in standard form \"ax%5E2%2Bbx%2Bc=0\" is \"highlight%28b%5E2-4ac%29\"
\n" ); document.write( "If the discriminant is positive, there are two real solutions.
\n" ); document.write( "If the discriminant is 0, there is one real solution.
\n" ); document.write( "If the discriminant is negative, there are two complex solutions.
\n" ); document.write( ":
\n" ); document.write( "a. 2x^2+x-1=0 a=2, b=1, c=-1
\n" ); document.write( "\"b%5E2-4ac=%281%29%5E2-4%282%29%28-1%29\"
\n" ); document.write( "=\"1%2B8=9\" The discriminant is positive, there are two real solutions.
\n" ); document.write( ":\r
\n" ); document.write( "\n" ); document.write( "b. 4/3x^2-2x+3/4=0 a=4/3, b=-2, c=3/4
\n" ); document.write( "\"b%5E2-4ac=%28-2%29%5E2-4%284%2F3%29%283%2F4%29\"
\n" ); document.write( "=\"4-4%2812%2F12%29%29\"
\n" ); document.write( "\"4-4%281%29\"
\n" ); document.write( "\"4-4\"
\n" ); document.write( "\"0\" The discriminant is 0, there is one real solution.
\n" ); document.write( ":
\n" ); document.write( "c. m^2+m+1=0 a=1, b=1, c=1
\n" ); document.write( "\"b%5E2-4ac=%281%29%5E2-4%281%29%281%29\"
\n" ); document.write( "=\"1-4\"
\n" ); document.write( "=\"-3\" The discriminant is negative, there are two complex solutions.
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\n" ); document.write( "Happy Calculating!!!
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