A complex math problem is one that is hard to solve.
He lived in a housing complex. This math problem is complex! The complex problem stumped many students.
A complex problem I helped solve was when my friend was arguing with a girl .
That is a complex problem.
scientific method can be adopted to solve complex problem
"Complex", in this sentence, is used as an adjective. It describes the problem, a noun.
For ANY complex problem that was ever solved, somebody helped solve it.
They often were about real situations in churches involving a problem that needed to be confronted.
A boggart is a shape shifter. It lives in dark places and when confronted, changes into whatever the person fears most.
Anything that is expanded should, by definition, be more complex and detailed.
my Mother Confronted Me when i didn't wash the dishes
It is very common for alcoholics to lie. They might lie to preserve their addiction or to avoid facing reality. They might be in denial or not want to be confronted with their problem. They might feel ashamed of their problem, as well.