Sum of coefficients in multinomial expansion











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If $x,y,z$ are independent of each other, then the sum of the coefficients in the expansion of $(5x+3y-8z)^{30}$ is -










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    I think you can get the sum of the coefficients just by setting $x=y=z=1$, am I right?
    – Matti P.
    Nov 21 at 12:59















up vote
0
down vote

favorite












If $x,y,z$ are independent of each other, then the sum of the coefficients in the expansion of $(5x+3y-8z)^{30}$ is -










share|cite|improve this question
























  • Welcome to MSE. It will be more likely that you will get an answer if you show us that you made an effort.
    – Vee Hua Zhi
    Nov 21 at 12:57






  • 1




    I think you can get the sum of the coefficients just by setting $x=y=z=1$, am I right?
    – Matti P.
    Nov 21 at 12:59













up vote
0
down vote

favorite









up vote
0
down vote

favorite











If $x,y,z$ are independent of each other, then the sum of the coefficients in the expansion of $(5x+3y-8z)^{30}$ is -










share|cite|improve this question















If $x,y,z$ are independent of each other, then the sum of the coefficients in the expansion of $(5x+3y-8z)^{30}$ is -







multinomial-theorem






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edited Nov 21 at 13:10









Vee Hua Zhi

772124




772124










asked Nov 21 at 12:53









Nikhil Kumar

1




1












  • Welcome to MSE. It will be more likely that you will get an answer if you show us that you made an effort.
    – Vee Hua Zhi
    Nov 21 at 12:57






  • 1




    I think you can get the sum of the coefficients just by setting $x=y=z=1$, am I right?
    – Matti P.
    Nov 21 at 12:59


















  • Welcome to MSE. It will be more likely that you will get an answer if you show us that you made an effort.
    – Vee Hua Zhi
    Nov 21 at 12:57






  • 1




    I think you can get the sum of the coefficients just by setting $x=y=z=1$, am I right?
    – Matti P.
    Nov 21 at 12:59
















Welcome to MSE. It will be more likely that you will get an answer if you show us that you made an effort.
– Vee Hua Zhi
Nov 21 at 12:57




Welcome to MSE. It will be more likely that you will get an answer if you show us that you made an effort.
– Vee Hua Zhi
Nov 21 at 12:57




1




1




I think you can get the sum of the coefficients just by setting $x=y=z=1$, am I right?
– Matti P.
Nov 21 at 12:59




I think you can get the sum of the coefficients just by setting $x=y=z=1$, am I right?
– Matti P.
Nov 21 at 12:59















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