The term in the expansion: T ( k+1) = n C k * A^(n-k) * B^k. In this case: n = 11, k + 1 = 8, so k = 7. A = x, B = - 3 y T 8 = 11 C 7 * x^(11-7) * ( - 3 y )^7 = =( 11 *10 * 9 * 8 * 7 * 6 * 5 ) / ( 7 * 6 * 5 * 4 * 3 * 2 * 1 )* x^4 * ( - 2,187 y^7 ) = = 330 * ( - 2,187 ) x^4 y^7 = - 721,710 x^4 y^7 Answer: The 8th term in expansion is