Question:
Find the equation of the plane passing through each group of points:
(i) $\mathrm{A}(2,2,-1), \mathrm{B}(3,4,2)$ and $\mathrm{C}(7,0,6)$
(ii) $\mathrm{A}(0,-1,-1), \mathrm{B}(4,5,1)$ and $\mathrm{C}(3,9,4)$
(iii) $\mathrm{A}(-2,6,-6), \mathrm{B}(-3,10,9)$ and
Solution:
