Question

||x-2|-5|=3 x aparține lui R (Acele semne sunt module)

Answer 1

|x-2|-5=3 sau |x-2|-5=-3

|x-2|=3+5=8 sau |x-2|=-3+5=2

x-2=8, x=8+2=10
x-2=-8, x=-8+2=-6
sau
x-2=2, x=2+2=4
x-2=-2, x=-2+2=0

x∈{-6, 0, 4, 10}