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29 December, 21:51

F (x) = - 4x^2+10x-8

What is the discriminant of f?

How many distinct real number zeros does f have?

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Answers (1)
  1. 30 December, 00:27
    0
    Discriminant is b^2 - 4ac. So it’s (10) ^2 - 4 (-4) (-8) = 100 + 128 = 228. When the discriminant is greater than 0 and not a perfect square you have 2 real irrational roots.
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