SOLUTION: For these problems I need use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. It is not necessary to

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: For these problems I need use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. It is not necessary to      Log On


   

Question 235508: For these problems I need use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. It is not necessary to find the roots; just determine the number and types of solutions.
2x^2 + 5x + 5 = 0
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
just determine the number and types of solutions.
2x^2 + 5x + 5 = 0
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a = 2 ; b = 5 ; c = 5
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discriminant = b^2-4ac = 25 -4*2*5 = -15
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Since the discriminant is negative the
quadratic has two unequal Complex Number solutions.
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Cheers,
Stan H