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swissgirl Group TitleBest ResponseYou've already chosen the best response.0
The 2b is throwing me off here
 2 years ago

campbell_st Group TitleBest ResponseYou've already chosen the best response.0
what are you asked to do... expand...
 2 years ago

sami21 Group TitleBest ResponseYou've already chosen the best response.0
you want to expand it?
 2 years ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.0
ya using binomail theorem
 2 years ago

dpflan Group TitleBest ResponseYou've already chosen the best response.1
you can just substitute another variable for 2b and plug 2b into the final expansion: \[(a+c)^{4}\] where c = 2b
 2 years ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.0
ya ok thanks
 2 years ago

campbell_st Group TitleBest ResponseYou've already chosen the best response.0
the coefficients will be 1 4 6 4 1 so its 1a^4 + 4a^3(2b) + 6a^2(2b)^2 + 4a(2b)^3 + (2b)^4
 2 years ago

panlac01 Group TitleBest ResponseYou've already chosen the best response.0
http://www.purplemath.com/modules/binomial.htm great stuff
 2 years ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.0
oh yay. I like that link
 2 years ago
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