<PRE><B>Question 144442</B>
 use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. How do i determine the number and types of solutions. For this equations 2x2 - 10x + 25 = 0.
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You have a quadratic with a=2 ; b = -10 ; c = 25
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The discriminant is b^2-4ac:
(-10)^2 - 4*2*25 = 100-200 = -100
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Since the discriminant is negative the equation has two 
complex solutions that are unequal.
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Cheers,
Stan H.</PRE>