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If m is the slope of one fo the two line...

If m is the slope of one fo the two lines jointly given by the equation `2x^(2)+4xy+y^(2)=0` then

A

`m^(2)+2m+4=0`

B

`m^(2)+4m+2=0`

C

`2m^(2)+4m+1=0`

D

`2m^(2)+4m=0`

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