Réponse:
EXERCICE 1:
A= 2(-3x-7)
= -2×3x-7×2
= -6x-14
B= 8(10x+8)
= 8×10x+8×8
= 80x+64
C=10(-2-7)
= -10×2-7×10
= -20-70
= -90
D= -5(6x-7)
= -5×6x+5×7
= -30x+35
E= -9(10x+3)
= -9×10x-9×3
= -90x-27
F= 43(73+9)
= 3139+387
= 3526
G= (-7x+2)(--10)
= 10(-7x+2)
= -10×7x+10×2
= -70x+20
H= 93(-2x+6)
= -93×2x+93×6
= 186x+558
EXERCICE 2:
J'ai pas bien compris la question