slt
facteur commun 2x-5
=> A = (2x-5) (x+7 - (3x+2))
A = (2x-5) (x+7-3x-2)
A = (2x+5) (-2x + 5)
bonjour
A = ( 2 x - 5 ) ( x + 7 - 3 x - 2 )
= ( 2 x - 5 ) ( - 2 x + 5)
