General term and middle term of binomial expansionMedium
Coefficients in Binomial Expansion
Let α, β, γ and δ be the coefficients of x7, x5, x3 and x respectively in the expansion of 
, x > 1. If u and v satisfy the equations αu + βv = 18, γu + δv = 20,
then u + v equals :
, x > 1. If u and v satisfy the equations αu + βv = 18, γu + δv = 20,then u + v equals :
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