1. **State the problem:** Simplify the rational expression $$\frac{75 - 3v^2}{v^2 + v - 30}$$.
2. **Factor the numerator and denominator:**
- Numerator: $$75 - 3v^2 = 3(25 - v^2)$$.
- Recognize that $$25 - v^2$$ is a difference of squares: $$25 - v^2 = (5 - v)(5 + v)$$.
- So numerator becomes $$3(5 - v)(5 + v)$$.
- Denominator: $$v^2 + v - 30$$.
- Find two numbers that multiply to $$-30$$ and add to $$1$$: these are $$6$$ and $$-5$$.
- So denominator factors as $$(v + 6)(v - 5)$$.
3. **Rewrite the expression:**
$$\frac{3(5 - v)(5 + v)}{(v + 6)(v - 5)}$$.
4. **Simplify by canceling common factors:**
- Notice that $$5 - v = -(v - 5)$$.
- So numerator can be written as $$3(-(v - 5))(5 + v) = -3(v - 5)(5 + v)$$.
- The expression is now:
$$\frac{-3(v - 5)(5 + v)}{(v + 6)(v - 5)}$$.
- Cancel the common factor $$(v - 5)$$:
$$\frac{-3\cancel{(v - 5)}(5 + v)}{(v + 6)\cancel{(v - 5)}}$$.
5. **Final simplified expression:**
$$\frac{-3(5 + v)}{v + 6}$$.
6. **Optional:** Rewrite numerator as $$-3(v + 5)$$ for clarity.
**Answer:** $$\boxed{\frac{-3(v + 5)}{v + 6}}$$
Simplify Rational 183892
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