If the probability mass function of the variable X described in the table is. find variance Y=x^2 +4x If you know that the torque is of the second order of the variable X about the origin is equal to...

If the probability mass function of the variable X described in the table is. find variance Y=x^2 +4x If you know that the torque is of the second order of the variable X about the origin is equal to 2.85 -3 0.05 -2 0.1 -1 0.25 01 01 P(x) 0.25 0.15 0.1