Independent trials that result in a success with probability p and a failure with probability 1-p are called Bernoulli trials. Let denote the probability that n Bernoulli trials result in an even number of success (0 being considered an even number).
Show that and use this to prove (by induction) that
So denotes the probability that n Bernoulli trials result in an even number of successes p = probability of success p-1 = probability of failure .

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

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idk

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