Question
Prove that ∣∣
∣
∣∣yz−x2zx−y2xy−z2zx−y2xy−z2yz−x2xy−z2yz−x2zx−y2∣∣
∣
∣∣ is divisible by (x+y+z), and hence find the quotient
OR
Using elementary transformations, find the inverse of the matrix A=⎛⎜⎝843211122⎞⎟⎠ and use it to solve the following system of linear equations:
8x+4y+3z=19
2x+y+z=5
x+2y+2z=7