Question
Perform each indicated operation. See Examples 2 through $8 .$$$\frac{4 a+36}{a^{2}-7 a-18} \div \frac{a^{2}-a-6}{a^{2}-81}$$
Step 1
We get: $$ \frac{4(a+9)}{(a-9)(a+2)} \div \frac{(a-3)(a+2)}{(a-9)(a+9)} $$ Show more…
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