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If one root of an equation is – 1 + I, then other root is?

ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Mathematics Quadratic Equations

Question:
If one root of an equation is – 1 + I, then other root is

Option A):
-1 - i
Option B):
None of these
Option C):
1- i
Option D):
1+ i

Correct Answer is Option D):
1+ i

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