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Mathematics 21 Online
OpenStudy (abmon98):

find in terms of a the coefficient x^2 in the expansion of (1-3x)(1+ax)^6 Given that the coefficient of X^2 is 24 and that a is positive evaluate i) a ii) the coefficient of x in the expansions

terenzreignz (terenzreignz):

Seems like a binomial theorem problem.

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