Question

What is the sum of the coefficients of ( [3x - 3x^2 +1]^744 ) x ( [- 3x + 3x^2 +1]^745 ) ??

Answer 1

@Luigi0210

Answer 2

@amistre64

Answer 3

@uri

Answer 4

( [3x - 3x^2 +1]^744 ) x ( [- 3x + 3x^2 +1]^745 )

it almost resembles: u^2 * (-u)^3

chk your signs to make sure you havent presented a typo

Answer 5

no typo

Answer 6

binomial notation might help

Answer 7

i think that would go something like this:\[\sum \binom{744}{n}(3x-3x^2)^n~(1)^{744-n}\]

Answer 8

other than that, what ideas do you have?