a) Find the value of k, the value of a and the value of b. b) Use
Question:
a) Find the value of k, the value of a and the value of b.
b) Use your values of k, a and b to find
the coefficient of the term in x³ in the
expansion of (1 − x)(1 + kx)8.
(1 + kx)8 = 1 + 12x + ax² + bx³ + ...
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ANSWER a Since we have the expansion of 1 kx8 as 1 kx8 1 12x ax bx We can compare the coefficients o...View the full answer
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Related Book For 
Complete Pure Mathematics 1 For Cambridge International AS & A Level
ISBN: 9780198427438
2nd Edition
Authors: Jean Linsky, Brian Western, James Nicholson
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