1) 4^1.5 - 9^-0.5 + (1/64)^-2/3= 8 - 1/3 + 64^(3/2)= 8 - 1/3 + 4= 11 2/3
2) 8^2/3 - (1/16)6-0.75 + (1/4)^1.5= 4 - 1/(16(4^3/4)) + 2= 4 - 1/(168) + 2= 4 - 1/128 + 2= 4 - 0.0078 + 2= 5.9922
1) 4^1.5 - 9^-0.5 + (1/64)^-2/3
= 8 - 1/3 + 64^(3/2)
= 8 - 1/3 + 4
= 11 2/3
2) 8^2/3 - (1/16)6-0.75 + (1/4)^1.5
= 4 - 1/(16(4^3/4)) + 2
= 4 - 1/(168) + 2
= 4 - 1/128 + 2
= 4 - 0.0078 + 2
= 5.9922