Find the values of k for which the following equations have two equal roots. a. x 2
Question:
Find the values of k for which the following equations have two equal roots.
a. x2 + kx + 4 = 0
b. 4x2 + 4(k − 2)x + k = 0
c. (k + 2)x2 + 4k = (4k + 2)x
d. x2 − 2x + 1 = 2k(k − 2)
e. (k + 1)x2 + kx − 2k = 0
f. 4x2 − (k − 2)x + 9 = 0
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a For a quadratic equation to have two equal roots the discriminant b24ac must be zero Therefore w...View the full answer
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Related Book For
Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook
ISBN: 9781108407144
1st Edition
Authors: Sue Pemberton, Julian Gilbey
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