F(x) = x 3 + ax 2 + bx + c The roots of f(x) = 0
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F(x) = x3 + ax2 + bx + c
The roots of f(x) = 0 are 1, k, and k + 1.
When f(x) is divided by x – 2, the remainder is 20.
a. Show that k2 – 3k – 18 = 0.
b. Hence find the possible values of k.
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Answer a Since the roots of fx are 1 k and k 1 we can write x 1x ...View the full answer
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Related Book For
Cambridge IGCSE And O Level Additional Mathematics Coursebook
ISBN: 9781108411660
2nd Edition
Authors: Sue Pemberton
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