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Question

Find the value of k, if x3 is a factor of p(x)=x22xk.
  1. 2
  2. 3
  3. 4
  4. 5


Solution

The correct option is B 3
Given  polynomial, p(x)=x22xk
 x3 is a factor of p(x)
Using factor theorem,
p(3)=0
322×3k=0
k=3

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