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[tex]( \frac{2a}{a + 3} - \frac{4a}{ {a}^{2} + 6a + 9 }) \div \frac{a + 1}{ {a}^{2} + 9 } [/tex]
[tex]( \frac{2a}{a + 3} - \frac{4a}{ {a}^{2} + 6a + 9 }) \div \frac{a + 1}{ {a}^{2} + 9 } [/tex]
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