what are the inequalities of this interval notation?

Question

(-∞, -1) u (-1,1) u (1, ∞), {x|x ≠ 1, -1}

need help please!

Answer 1

x = any real number except 1 and -1

graph the unions of 3 line segments and it's the entire real number line, but with 2 "holes" in it, 2 discontinuities at x=1 and x =-1