Question

Solve for x: |x − 2| + 10 = 12

x = 0 and x = 4
x = −4 and x = 0
x = −20 and x = 4
No solution

Answer 1

Let a>0
then |u|=a implies u=a or u=-a


so isolate the absolute value part and then use what I just said

Answer 2

thanks