KRISTY50 KRISTY50 05-01-2021 Mathématiques Answered Exercice I: développer chaque expression. a) (x + 5)(x – 5) = + b) (x –8)(x + 8) = c) (3x +1)(3x-1) = d) (4 – 7x)(4 + 7x) = e) (5 + 2x)(5 – 2x)
