in.GF(24) Compute f(x) + g(x), f(x)-g(x),f(x)g mod P(x) where P(x)-x+4 x + 1 a. f(x)-x2 + 1.gx) -x3 +x2 +1 b. f(x) = x2 + 1,g(x) = x + 1