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General Term with Variables
## Formula
For:
$$(ax+b)^n$$
the $$(r+1)$$th term is:
$$T_{r+1}={}^nC_r(ax)^{n-r}b^r$$
For:
$$(a+bx)^n$$
the $(r+1)$th term is:
$$T_{r+1}={}^nC_r a^{n-r}(bx)^r$$
## Usage
- Used to determine the power and coefficient of $$x$$ in a specific term.
