# What is the answer to this polynomial expression question?

For the polynomial:

f(x) = -2x^3 - 2x^2 + 7x - 25

as

x ---> - ∞ f(x) ------> ∞

a) true

b) false

### 1 Answer

Relevance

- llafferLv 74 weeks agoFavourite answer
Look at the first term:

-2x³

As x is infinately negative, x³ will continue to be negative.

Multiply that by -2 and now it's positive.

So the limit of f(x) as x approaches negative infinity would be positive infinity.

So that statement is true.

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