Question

What is the coefficient of the x^2y term in the expansion (x+2y)^3?

Answer 1

Hi,
\[(a+b)^{3} = a ^{3} + a ^{2}b + ab ^{2} + b ^{3}\]

so for ur question
\[(x + 2y)^{3} = x ^{3} + x ^{2}2y + x(2y)^{2} + (2y)^{3}\]
Now can u find the answer for ur question??

Answer 2

Mmkay thank you. Is that the binomial theorem?

Answer 3

yes! and u r welcome!!