Question

State the excluded value(s) of (x^2-5x+6)/(x^2-25)

A. x cannot equal 5, –5

B. x cannot equal 2, 3

C. x cannot equal 5, –5, 2, 3

D. x cannot equal 5

Answer 1

hint: the denominator cannot be zero

Answer 2

denominator = x^2 - 25, do you know how to solve this

Answer 3

No I don't :S

Answer 4

x^2-25 = 0

x = ?? or x = ??

Answer 5

so the answer is b?

Answer 6

x^2-25 = 0

(x-5)(x+5) = 0

x = ?? or x = ??

Answer 7

a?

Answer 8

correct