For what values of x is the rational expression below undefined?

Mathematics

1 answer:

Soloha48 [4]3 years ago

3 0

Answer:

B and D

Step-by-step explanation:

Given

$\frac{x+8}{x^2-2x-24}$

The denominator of the rational function cannot be zero as this would make it undefined. Equating the denominator to zero and solving gives the values that x cannot be.

Solve x² - 2x - 24 = 0, that is

(x - 6)(x + 4) = 0

Equate each factor to zero and solve for x

x - 6 = 0 ⇒ x = 6 → B

x + 4 = 0 ⇒ x = - 4 → D

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777dan777 [17]

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x - 2 = 6
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3 years ago

Given g(x)=-x-1 find g(-4)

dmitriy555 [2]

Answer:

g(-4) = 3

Step-by-step explanation:

g(x) = -x - 1

g(-4) = -(-4) - 1

g(-4) = 4 - 1

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6 0