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6 December, 02:14

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

check all that apply

x-4/3x^2-75

A. 5

B. 4

C. 3

D.-3

E.-4

F.-5

+1
Answers (1)
  1. 6 December, 02:39
    0
    Hello,

    A fraction is not defined if its denominator is null.

    3x²-75=0

    ==>3 (x²-25) = 0

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

    ==>x=-5 or x=5
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