Sagot :
Réponse :
bonsoir
J = (10x - 5 )( x+2) + ( 1-x)(2x-1)
= 5(2x - 1) (x+2) + ( 1-x)(2x-1)
= (2x-1)( 5(x+2) + (1 -x )
= (2x-1)( 5x + 10 + 1 -x )
= (2x-1) ( 4x + 11 )
voila :)
Bonjour,
10x-5= 5( 2x-1)
5( 2x-1) (x+2) + (1-x) ( 2x-1)
(2x-1) ( 5x+10 + 1-x)
= (2x-1) ( 4x +11)