Name only one of the 3 following problems to solve. if you attempt more than one problem, mark the e you want to be graded. if two or more problems are solved without marking which one is the one you want us to grade, the quiz will not be graded (value 12 points). 1. solve the following system using gaussian elimination. state your final answer clearly. use parametric representation if required and show your work to get full credit 2x+y+2z = 4 2x +2y 5 2x-y + 6z 2 solution of the system of eg list the row operations