Question

Find the coefficient of y⁵ in the expression of (3+2y)⁸

Answer 1

256 y^8 + 3072 y^7 + 16128 y^6 + 48384 y^5 + 90720 y^4 + 108864 y^3 + 81648 y^2 + 34992 y + 6561

your answer is 48384