Sagot :
A) (16t+13) [ (21t-3)+ 2)]
(16t+13) (21t-1)
B) (-14x+5) [1-(4x-7)]
(-14x+5) (1-4x+7)
(-14x+5) ( -4x +8)
(16t+13) (21t-1)
B) (-14x+5) [1-(4x-7)]
(-14x+5) (1-4x+7)
(-14x+5) ( -4x +8)
Réponse :
Explications étape par étape
a) (16t+13) (21t-3) +2 (16t+13)
= (16t+13)(21t-3+2)
= (16t+13)(21t-1)
b)(-14x+5) - (4x-7) (-14x+5)
= (-14x+5) ( 1-(4x-7))
= (-14x+5) (1-4x+7)
= (-14x+5) (-4x+8)