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General Term with Negative Sign
## Formula
For:
$$(a-b)^n$$
the $$(r+1)$$th term is:
$$T_{r+1}=(-1)^r{}^nC_r a^{n-r}b^r$$
## Usage
- Used to find individual terms in expansions involving subtraction.
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General Term with Negative Sign
## Formula
For:
$$(a-b)^n$$
the $$(r+1)$$th term is:
$$T_{r+1}=(-1)^r{}^nC_r a^{n-r}b^r$$
## Usage
- Used to find individual terms in expansions involving subtraction.
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