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Coefficient of $$x^r$$
## Formula
In:
$$(a+bx)^n$$
the coefficient of $x^r$ is:
$${}^nC_r a^{n-r}b^r$$
## Usage
- Used to directly find the coefficient of a specified power of $$x$$.
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Coefficient of $$x^r$$
## Formula
In:
$$(a+bx)^n$$
the coefficient of $x^r$ is:
$${}^nC_r a^{n-r}b^r$$
## Usage
- Used to directly find the coefficient of a specified power of $$x$$.
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