16^3/4 + 4*(1/25)^1/2
16^3/4+4*(1/25)^1/2= 16^3/4+4(5^ -2)^1/2= =16^3/4+4(5^ -1)= =((4√)16)^3+4/5= =2^3+0.8=8+0.8= =8,8