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Jawaban:

7) D. 16

8) B. 128/27

Penjelasan dengan langkah-langkah:

7) 4^3,5 – 64^-0,5

= 4^3,5 – 64^-1,5

= 4^2

= 16

8) (1/4)^-1/2 : (9/16)^3/2

= 4^1/2 : 9^3/2 / 16^3/2

= (2^2)^1/2 : (3^2)^3/2 / 16^3/2

= 2 : 3^3/16^3/2

= 2 x 16^3/2 / 3^3

= 2 x 16^3/2 / 27

= 2×2^6/27

= 2^7/27

= 128/27

= 4 20/27

= 4,740