有効 ゆうこうけた演算 えんざんじゃありませんでした
yūkōketaenzanjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 有効けた演算

1. Was not effective.; Was not valid.; Did not work.

Past/Perfective
Negative
Polite
Terminal Form
Computing