Expansion necessary?

Algebra Level pending

Find the sum of the coefficients of:

( ( 7 x + 2 y + 3 z ) 5 + ( 5 x + 7 b + 4 a ) 2 ) 2 \displaystyle ((7x+2y+3z)^5 + (5x+7b+4a)^2)^2


The answer is 62044831744.

Isay Katsman by Isay Katsman , 22, USA

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1 solution

Ruslan Abdulgani
Jan 19, 2015

Put the value of 1 to the variable s, then we have ((7+2+3)^5 +(5+7+4)^2)^2 = 62 044 831 744

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