Find x such that the four points `A\ (3,\ 2,\ 1)`, `B(4, x ,\ 5)`, `C\ (4,\ 2,\ 2)`and `D\ (6,\ 5,\ 1)`are coplanar

Find lambda for which the points A(3,\ 2,\ 1),\ B(4,\ lambda,\ 5),\ C(4,\ 2,\ -2)\ a n d\ D(6,\ 5,\ -1) are coplanar.

Find x such that the four points A(3,2,1),B(4,x,5),C(4,2,-2) and D(6,5,-1) are coplaner.

Find x such that the four points A(3,2,1) quad B(4,x,5) and are coplanar

Find x such that the four points A (4, 1, 2), B (5, x, 6), C (5, 1,-1) and D (7, 4, 0) are coplanar

Show that the points A(-1,\ 4,\ -3),\ B(3,\ 2,\ -5),\ C(-3,\ 8,\ -5)a n d\ D(-3,\ 2,\ 1) are coplanar.

Find x such that the four point A(3,2,1),B(4,x,5),C(4,2,-2) and D(6,5,-1) are coplanar.

Using vectors, find the value of x such that the four points A(x,5,-1), B(3,2,1), C(4,5,5) and D(4,2,-2) are coplanar.