ton cahier est le_______{mieux,meilleur}which one should i use?

well ton cahier est le mieux means your notebook is the best, and ton cahier est le meilleur also means your notebook is the best...

im not the best in french but i do get A's in it. still i think you can use either one.

Ton cahier est le meilleur.

"Mieux" est le superlatif de "bien" (qui est un adverbe et, en conséquence précise un verbe ou un adjectif).

"Meilleur" est le superlatif de "bon" (qui est un adjectif et précise un nom).

Exemples :
Cette voiture roule bien ; celle-là roule mieux. (This car runs well; that one runs better.)
Ce gâteau est bon ; celui-là est meilleur. (This cake is good; that one is better)

I Love French!!!!!!

When determining whether to use "mieux" or "meilleur" in this context, you need to consider whether you are comparing multiple items or describing a single item.

If you are comparing two or more items, you would use "mieux." For example, "Ton cahier est le mieux parmi tous les cahiers." This translates to "Your notebook is the best among all the notebooks."

If you are simply describing a single item without any comparison, you would use "meilleur." For example, "Ton cahier est le meilleur cahier." This translates to "Your notebook is the best notebook."

In the given sentence "Ton cahier est le _______," it suggests that you are comparing your notebook with others. Therefore, you should use "mieux."