Помогите 2m-3x+x+6m x^2-m^2+m^2-x^2

Question

Помогите 2m-3x+x+6m
x^2-m^2+m^2-x^2

Answer 1

2m-3x+x+6m=8m-2x;  x^2-m^2+m^2-x^2=0.