Question

Simplify. Identify any x-values for which the expression is undefined.
-x-4/x^2-x-20

undefined for x = 1/5 and x = -1/4
1x + 5

undefined for x = 5 and x = -4
1x+5

undefined for x = 1/5 and x = -1/4
−1x−5

undefined for x = 5 and x = -4
−1x−5

Answer 1

1/x+5

Answer 2

1/x+5

Answer 3

-1/x-5

Answer 4

-1/x-5

Answer 5

Hint: -(x+4)/(x+4)(x-5). The answer is then undefined where the denominator equals 0.

Answer 6

so its D

Answer 7

Yea, get it?

Answer 8

oh ok yes thanks:)