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Grade: 11
        

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?

8 years ago

Answers : (1)

Deepak Sharma
18 Points
							

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

8 years ago
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