費用 ひよう便益 べんえき分析 ぶんせきじゃなかったです
hiyōbe n'ekibunsekijanakattadesu

Noun
Desu Copula

The polite, past negative form of 費用便益分析

1. Cost-benefit analysis wasn't.; It wasn't a cost-benefit analysis.

Past/Perfective
Negative
Polite
Casual Register