The polynomial 4x 3 + kx 2 65x + 18 is denoted by f(x). a. Given
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The polynomial 4x3 + kx2 − 65x + 18 is denoted by f(x).
a. Given that (x + 2) is a factor of f(x), find the value of k.
b. When k has this value, solve the equation f(x) = 0.
c. Write down the roots of f(x2) = 0.
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a If x2 is a factor of fx then f2 0 Therefore we have f2 423 k22 652 18 0 Simplifying we get ...View the full answer
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Related Book For
Cambridge International AS & A Level Mathematics Pure Mathematics 2 & 3 Coursebook
ISBN: 9781108407199
1st Edition
Authors: Sue Pemberton, Julianne Hughes, Julian Gilbey
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