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If  and  be the roots of the equation x2 − 2x + 2 = 0, then the least value of n for which = 1 is  



Question ID - 57561 | SaraNextGen Top Answer

If  and  be the roots of the equation x2 − 2x + 2 = 0, then the least value of n for which = 1 is  

1 Answer
127 votes
Answer Key / Explanation : (4) -

x2  − 2x + 2 = 0

roots of this equation are

Then

or

So, i

Now, = 1 ⇒ = 1

⇒ n must be a multiple of 4.

     minimum value of n = 4

127 votes


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