Please can you help me quickly

NOTE: MATLAB/OCTAVE program has to be written to answer this question Develop an m file FUNCTION (using MATLAB/OCTAVE) to solve the following system of equations: 8x + 20y +16z = 100 20x+80y +50z = 250 16x + 50y +60z = 100 using (a) LU decomposition scheme (b) Can we use Cholesky decomposition for this system? Justify your answer (c) If your answer is yes for the above, develop an m file FUNCTION to solve the above system by using Cholesky decomposition