Question

(X+changeX)^3

Answer 1

Do you need help expanding the third degree binomial?

Answer 2

yea

Answer 3

\[\Large\bf\sf (x+\Delta x)^3\]
The powers count down on x, from 3 to 0.
The powers count up on ChangeX, from 0 to 3.
\[\Large \text{_}x^3\Delta x^0+\text{_}x^2\Delta x^1+\text{_}x^1\Delta x^2+\text{_}x^0\Delta x^3\]

Answer 4

I left little spaces in front of each term because each will have a coefficient.
The coefficients come from Pascal's Triangle.
Are you familiar with Pascal's thing? :o