Math
posted by Brian .
Use algebra and the properties of limits as needed to find the limit.
If the limit does not exist, say so.
(→ − ∞)lim: 9x^2+5x17 / 5x^3+12x^2+21

The limit is zero, because
9x^2+5x17 / 5x^3+12x^2+21 > 9/(5x)
as x> infinity or infinity
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