8^1/4 x (2^1/4)^3 + (1/4)^-2 - 8^1/2 adalah

8^1/4x(2^1/4)^3 + (1/4)^-2 - 8^1/2
= (2^3)^1/4 x 2^3/4 + (2^-2)^-2 - (2^3)^1/2
= 2^3/4x2^3/4+2^4-2^3/2
= 2^6/4+2^4-2^3/2
=2akar2+16-2akar2
= 16

utk detailnya bisa lihat disini