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What is the sum of coefficients in (x-2y+3z)^20? The answer is 2^20 They have taken x=y=z=1 =(1-2+3)^20 =2^20. Can you please explain why x, y, z is taken as 1?

What is the sum of coefficients in (x-2y+3z)^20?


The answer is 2^20


They have taken x=y=z=1


=(1-2+3)^20


=2^20.


 


Can you please explain why x, y, z is taken as 1?

Grade:11

1 Answers

Deepak Sharma
18 Points
11 years ago

sum of coefficients means where not be any variable term and thats we have taken x y z as 1

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