сравнить 4^(1/3)+〖16〗^(1/3) и 〖64〗^(1/3)

64^(1/3)=4
4^(1/3)>1.5      4>1,5^3    4>2,25*1,5  4>3,375
16^(1/3)>2,5    16>6,25*2,5    16>15.625
Значит:
4^(1/3)+16^(1/3) >  64^(1/3)