What is the sum of coefficients in (x-2y+3z)^20?The answer is 2^20They have taken x=y=z=1=(1-2+3)^20=2^20.Can you please explain why x, y, z is taken as 1?
Gundoos 1234 , 14 Years ago
Grade 11
1 Answers
Deepak Sharma
Last Activity: 14 Years ago
sum of coefficients means where not be any variable term and thats we have taken x y z as 1