Question

Find the equation of the plane which contains the line of intersection of the planes ˆr.(ˆi+2ˆj+3ˆk)−4=0 and ˆr.(2ˆi+ˆj−ˆk)+5=0 and which is perpendicular to the plane ˆr.(5ˆi+3ˆj−6ˆk)+8=0

Answer 1

I can't answer it seems to be little bit confusing