alwaysneedhelpinmath alwaysneedhelpinmath
  • 03-03-2018
  • Mathematics
contestada

Look at the rational expression below. x^2-4/2-x Which value of x makes the expression undefined?

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laura7laura23
laura7laura23 laura7laura23
  • 03-03-2018
the answer would 2, since you cannot divide anything by 0 as it would be undefined. 2 is the only number that gives you this option 
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SociometricStar
SociometricStar SociometricStar
  • 29-06-2019

Answer:

given rational function is undefined for x = 2

Step-by-step explanation:

The given rational function is

[tex]\frac{x^2-4}{2-x}[/tex]

The rational function is undefined if the denominator is zero.

Hence, the given rational function is undefined if

[tex]2-x=0[/tex]

Solve the equation for x

[tex]x=2[/tex]

Therefore, the given rational function is undefined for x = 2

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