Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$F(x)= \frac{ x+4 }{ { x }^{ 2 } -9 }$$

Evaluate

$\frac{x+4}{x^{2}-9}$

Expand

$\frac{x+4}{x^{2}-9}$

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