Упростите a^1/3-6a^1/6+9/a^1/3
a^1/3-6a^1/6+9 - это всё делить на a^1/3? или только 9?
A^(1/3) - 6*[a^(1/6)] + 9*[a^(1/3)] = 10*[a^(1/3)] - 6*[a^(1/6)] = = [2a^(1/6)] * {[5a^(1/3)] - 3}