NILSPOULLAOUEC
Answered

Factoriser l’expression:
3x+21=
7-7x=
(4x+1)(x+9)-(6x-5)(4x+1)=

Sagot :

VINS

bonjour

3 x + 21 = 3 ( x + 7 )

7 - 7 x = 7 ( 1 - x )

( 4 x + 1 ) ( x + 9 - 6 x + 5 )

= ( 4 x + 1 ) ( - 5 x + 14 )