Solve the following system of linear equations using Gauss-Jordan elimination method.
x+y-z=2
-x-y+z=-2
2y-z=0

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Lucy and donavan measured the length of the school garden. lucys measurement is 11.3m and donavans measurement is 113 cm. could both be correct? explain

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2