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Basic operations, simple factors, factor Theorem, Remainder Theorem, Division of polynomials.

If 3- 3x-1 = 18, then the value of xx is :

Option:
A. 3
B. 8
C. 27
D. 216
Answer: C . 27

Justification:

3- 3x-1 = 18 ↔ 3- 3x/3 = 18 ↔ a - a/3 = 18,
where a = 3x ↔ 2a = 54 ↔ a = 27 ↔ 3= 33 ↔ x = 3. 

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