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If the roots of Quadratic i^(2)x^(2)+5ix...

If the roots of Quadratic `i^(2)x^(2)+5ix-6` are `a+ib` and `c +id` (`a,b,c,d in R` and `i = sqrt(-1)`) then, `(ac-bd) + (ad+bc)i = ?`

A

6

B

-6

C

6i

D

None of these

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The correct Answer is:
A
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