document.write( "Question 1094145: For the quadratic equation 2x^2 + bx + 3 = 0, explain how to find a value of b where the discriminant yields a quadratic equation with the following types of solutions.
\n" ); document.write( "A. two imaginary solutions
\n" ); document.write( "B. one real solution
\n" ); document.write( "C. two rational solutions
\n" ); document.write( "D. two irrational solutions
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Algebra.Com's Answer #708827 by greenestamps(13200)\"\" \"About 
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With the standard form of a quadratic equation
\n" ); document.write( "\"y+=+ax%5E2%2Bbx%2Bc\"
\n" ); document.write( "the discriminant
\n" ); document.write( "\"b%5E2-4ac\"
\n" ); document.write( "in the quadratic formula determines which of these different cases you have.

\n" ); document.write( "(1) If the discriminant is negative, there are no real solutions -- i.e., case A: two imaginary solutions.
\n" ); document.write( "(2) If the discriminant is zero, there is a single real solution: case B.
\n" ); document.write( "(3) If the discriminant is positive, then there are two real solutions. Furthermore, the solutions are rational if the discriminant is a perfect square (case C), or they are irrational if the discriminant is not a perfect square (case D).

\n" ); document.write( "With your quadratic, the discriminant is
\n" ); document.write( "\"b%5E2-4%282%29%283%29+=+b%5E2-24\"

\n" ); document.write( "So you have...
\n" ); document.write( "Case A, if b^2 is less than 24;
\n" ); document.write( "Case B, if b^2 is equal to 24;
\n" ); document.write( "Case C, if b^2-24 is a positive perfect square; and
\n" ); document.write( "Case D, if b^2-24 is positive but not a perfect square.
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