This is the 10610th most frequent French word.
maximal
Highest or greatest possible; maximum.
In this sentence, 'maximaux' is employed to indicate the greatest possible level of results.
Pour obtenir des résultats maximaux, il faut travailler régulièrement.
To achieve maximum results, one must work regularly.
The word 'maximale' here refers to the utmost physical dimension or capacity (extension) that is possible.
L’extension maximale de ce produit est de trois mètres.
The maximum extension of this product is three meters.
Here, 'maximale' is used to describe the highest limit or extent allowed (speed).