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If 3x^(2)+18xy+by^(2)=0 represents a pai...

If `3x^(2)+18xy+by^(2)=0` represents a pair of lines, making an angle `pi` with each other, then `b=`

A

3

B

9

C

27

D

81

Text Solution

Verified by Experts

The correct Answer is:
C
NA
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