## Rational Expressions

I was wondering if someone could check these questions to make sure that I am doing these correctly. I have attached a few questions in word document as I could not type it properly on here.
Attached Files
 Rational Expressions.doc (19.0 KB, 5 views)
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 Recognitions: Gold Member Science Advisor Staff Emeritus $$\frac{5x^ 2- 20}{x^2+14x+24}= \frac{5(x^2-4)}{(x+12)(x+2)}$$ x2- 4 can be factored and this simplifies more. $$$$\frac{25}{12x^2y}$$$$\frac{3y^3}{10x}$$= \frac{5y^2}{8x^2}$$ Carefully count the number of 'x's in the denominators. $$$$\frac{x^2-25}{12x^2}$$$$\frac{9x}{2x^2+10x}$$= \frac{3(x-5)}{18x^2}$$ How did the "9" in the numerator become "3"?