Q. If distance between two non-intersecting planes $P_1$ and $P_2$ is 3 units, where $P_1$ is $2 x-3 y+6 z+5=0$ and $P_2$ is $4 x+b y+c z+d=0$ and point $A(-3,0,-1)$ is lying between the planes $P_1$ and $P_2$ then the value of $(b+c+d)$, is equal to
Vector Algebra
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