1.

If (2,3 -1) is the foot of the perpendicular from (4,2,1) to a plane, the equation of plane is

Answer»

`2X - y - 2Z - 3=0`
`2x + y - 2z - 9=0`
` 2x + y + 2z -5=0`
2x-y+2z+1=02x + y + 2z + 1=0`

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