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If 2-i is a root of the equation ax^2+12...

If 2-i is a root of the equation `ax^2+12x+b=0` .then the value of ab is equal to a)45 b)15 c)-15 d)-45

A

45

B

15

C

`-15`

D

`-45`

Text Solution

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The correct Answer is:
A
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