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vampirchik [111]
3 years ago
5

The function p(x) is an odd degree polynomial with a negative leading coefficient. If q(x) = x3 + 5x2 - 9x - 45, which statement

is true? A. As x approaches negative infinity, p(x) approaches positive infinity and q(x) approaches negative infinity. B. As x approaches negative infinity, p(x) and q(x) approach positive infinity. C. As x approaches negative infinity, p(x) and q(x) approach negative infinity. D. As x approaches negative infinity, p(x) approaches negative infinity and q(x) approaches positive infinity.
Mathematics
1 answer:
saul85 [17]3 years ago
4 0

Answer:

As x approaches negative infinity, p(x) approaches positive infinity and q(x) approaches negative infinity.

Step-by-step explanation:

The order of the polynomial and the sign of the leading coefficient will let us find the correct answer easily,

If you get a negative number (such as negative infinity) and you take it to an odd power, (for example 3), you will still get a negative number.

As q(x) has a positive leading coefficient, this means that as x approaches negative infinity, q(x)  will approach too negative infinity.

Since p(x) has an odd degree, but negative leading coefficient,

(-)*(-) = +

And this means that p(x) approaches positive infinity

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