The equation x 2 + kx + (k + 3) = 0, where k is a constant,
Question:
The equation x2 + kx + (k + 3) = 0, where k is a constant, has different real roots.
a. Show that k2 − 4k − 12 > 0.
b. Find the set of possible values of k.
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To show that k2 4k 12 0 we need to demonstrate that the quadratic expression has only positive value...View the full answer
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Related Book For 
Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS
ISBN: 9781292183398
1st Edition
Authors: Greg Attwood
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