Question

Expand the given equation:
(k+7) ^3​

Answer 1

I don’t know but other will help you out don’t worry GL

Answer 2

Answer:

(k+7)^3=k^3+7^3+3{7k(k+7)}

=k^3+21+21k(k+7)

=k^3+21+21(k^2)+147k