Simplify.
[-5, 12]
Simplify.
[-9, -13]
Simplify.
undefined
Simplify.
[-50 -25] [-35 30]. [-45 -50]
Simplify.
[10, -4, 9, -6]
Simplify.
[12 -36 -60][-36 36 -36]
Simplify.
[0 -21] [-5 -8]
Simplify.
[-33 -48] [21 12]
Simplify.
[6 4]
Simplify.
[-28, 6]
Simplify.
[16, -24]
Simplify.
undefined