ADEL77100LOL
Answered

a) (5x+2) -3 (x+1)

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

SVP mercii​

Sagot :

YAYAMOHAMED

Réponse:

a)

(5x+2) -3(x+1) = 5x + 2 - 3x - 3

= 2x -1

b)

(5x-1)(5x+1) - ( 6x+5)( x-4) = 25x² -1 - (6x² -24 +5x -20)

= 25x² -1 - (6x² +5x -44 )

= 25x² -1 - 6x² -5x +44

= 19x² - 5x + 43