please solve.

X is a random variable with probability density function f(x) = (3/8)*(xsquared), 0

X is a random variable with probability density function f(x) = (3/8)*(x-squared), 0 < x < 2. The expected value of X-squared is Select one: u u a. b. c. d. e. 2.4 2.25 2.5 1.5 6