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[tex] \frac{5}{(a+ 2)^{2} } - \frac{5}{ a^{2} - 4 } - \frac{5}{a+2} [/tex]
[tex] \frac{5}{(a+ 2)^{2} } - \frac{5}{ a^{2} - 4 } - \frac{5}{a+2} [/tex]
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Answers & Comments
(a+2)^2-(a^2-4)-(a+2)=
(a+2)(a+2-a+2-1)=3(a+2)=3a+6