Question

Sa se determine elementele multimi
A={x apartin R/|x-1|=5}

Answer 1

|x-1=5
x-1=5 =>x =6
x-1=-5 =>x=-4
A={-4;6}

Answer 2

A={x∈R/|x-1||=5}
|x-1|=5
|x|=5+1
|x|=6
|x|=6 |-x|=6
A={-6:6}