2(x^3y^5)^2
2(x3y5)2
Remember that we have a rule of powers (exponents) that says (am)n = a(m*n)
In effect, we're multiplying the "inside" power by the "outside" power
So we really have 2[ (x3)2 * (y5)2 ] = 2[x6 * y10] = 2x6y10