If the equation... | Complex Number | JEE MAIN 2020

JEE MAIN 2020

08-01-20 S1

Question

If the equation, $x^2+b x+45=0(b \in R)$ has conjuate complex roots and they satisfy $|z+1|=2 \sqrt{10}$, then

Select the correct option:

A

$b^2-b=42$

B

$b^2-b=30$

C

$b^2+b=12$

D

$b^2+b=72$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Mathematics

Easy

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