Solve the system $A\stackrel{}{x}\frac{?}{b}=ar(b)$ by the Cholesky method where

$A=([1\mathrm{.}0,-1\mathrm{.}0,2\mathrm{.}0],[1\mathrm{.}0,5\mathrm{.}0,0],[2\mathrm{.}0,0,6\mathrm{.}0])\frac{,}{b}ar(b)=([6\mathrm{.}0],[-14],[10])$