21. Ifix[(a-j)xi]+j[a-k)x]+ k[(-i)k]- and =xi + y}+ zk then the value of 8(x' -xy+zx) is equal to 22 The distance between the point (-1, -5, -10) and the point of intersection of the line x-2 y+1 z-2 with the plane x - y +Z 5 is 3 4 12