Bonsoir
Exercice 4:
1)
8*a+8*1
=8a+8
=8(a+1)
2)
3*4+4g
=12+4g
=4(3+g)
3)
6-3c
=3(2-c)
4)
5a+a^2
=a(5+a)
5)
9t+12t^2
=3t(3+4t)
Exercice 3:
1)
(9-2z)3
=9*3-2z*3
=27-6z
2).
11p*(4p+12)
=11p*4p+11p*12
=44p^2+132p
3).
(-4)(5c+6)+2(9-7c)
=2(-2(5c+6)+9-7c)
=2(-10c+9-7c)
=2(-17c-3)
Voilà
Les trucs du genres ^2 c’est exposant 2
Et * c’est une multiplication
