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

If 5x/125 = 1, the x is equal to :

Option:
A. 5
B. 2
C. 0
D. 3
Answer: D . 3

Justification:

5x/125 = 1 ↔ 5= 125 = 53 ↔ x = 3.

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