Roots of the equation x^2 + bx + 45 = 0,...

Roots of the equation `x^2 + bx + 45 = 0`, `b in R` lie on the curve `|z + 1| = 2sqrt(10)' , where z is a complex number then

A

`b^2 + b = 12`

B

`b^2 - b = 30`

C

`b^2 - b = 36`

D

`b^2 + b = 30`

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The correct Answer is:

B

NA

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