Question: Let the random variable X have the pmf; f(x) = ((|x| + 1)^2)/9 , x = -1, 0, 1. Compute E[X], E[X2 ], and E[3X2

Let the random variable X have the pmf; f(x) = ((|x| + 1)^2)/9 , x = -1, 0, 1.

Compute E[X], E[X2 ], and E[3X2 2X + 4].

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