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What is Limit of (x cubed + 3 x squared minus 5) as x approaches negative 2?

–25
–15
–9
–1

User Creker
by
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2 Answers

3 votes

Answer:

Explanation:

D. -1

User John Simon
by
7.8k points
4 votes

Answer:

–1

Explanation:

We want to find the following limit:


\lim_(x \rightarrow -2) x^3 + 3x^2 - 5

Since the function does not have any discontinuity(point in which the denominator is 0, for example), we just replace the values of x by -2. So


\lim_(x \rightarrow -2) x^3 + 3x^2 - 5 = (-2)^3 + 3(-2)^2 - 5 = -8 + 12 - 5 = -13 + 12 = -1

The value of the limit is -1.

User Barry Houdini
by
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