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### Question Asked by a Student from EXXAMM.com Team

** Q 1855156064. ** Find the vector and cartesian equation of the

planes

(a) that passes through the point `(1 ,0, -2)` and

the normal to the plane is `hat i + hat j - hat k`.

(b) that passes through the point `(1,4,6)` and

the normal vector to the plane is `hat i - 2 hat j + hat k` .