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

Value of k foe which (x - 1) is a factor of (x3 - k) is :

Option:
A. -1
B. 1
C. 8
D. -8
Answer: B . 1

Justification:

Since (x - 1)  is a factor, x = 1 will make (x3 - k) zero.
.`. 1 - k = 0 or k = 1. 

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