Помогите пожалуйста решить задачу номер 1041
1) = m(m²-9)-(m³-8) = m³-9m-m³+8 = -9m+8 = -9*(-2/3)+8 = 6+8=14 2) = 36m²-n²-36m²-12mn+15mn+5n² = 4n²+3mn = n(4n+3m) = 3/4 * (4* 3/4 + 3*(-8/9)) = 3/4 * (3 - 8/3) = 3/4 * 1/3 = 1/4 = 0,25