Question 398024
Find all numbers for which the rational expression is undefined. (use a comma to separate answers)
(t^3-4t)/(t^2-36)

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The denominator cannot be zero.
Solve t^2-36 = 0
(t-6)(t+6) = 0
t = 6 or t = -6
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Domain: All Real numbers except t=6 or t=-6
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Cheers,
Stan H.