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2) ( 36 )^3/2 - ( 27)^4/3
= ( 6²)^³/2 - ( 3³)^⁴/3
= 6³ - 3⁴
= 216 - 81
= 135 ( B )

3) 5-³ × 2-²
= 1/5³ × 1/2²
= 1/125 × 1/4
= 8/1000 × 25/100
= 0,008 × 0,25
= 0,002 ( B )

4) x = 25 dan y = 64
( x^-³/² • ³√y²
----------------------
y^⅓ - x^½

= (25)^-³/² • ³√64²
----------------------------
64^⅓ - 25^½

= (5²)^-³/² • ³√(2^6)²
------------------------------
( 2^6)^⅓ - ( 5² )^½

= 5-³ • 2^¹²/³
--------------------
2² - 5¹

= 2⁴
--------------
( 2² - 5¹) 5³

= 16
-------------
( 4 - 5 ) 125

= 16
--------
- 125

= - 16
---------- ( B )
125