bonjour,
E = 4 x + 5 - 8 x = - 4 x + 5
F = 5 x + 4 - 3 x - 2 = 2 x + 2
continue les 2 autres, c'est la même chose
A = 8 x + 3 - 6 x - 2 = 2 x + 1
B = 9 x + 5 - 2 x + 3 = 7 x + 8
C = 4 x - 9 - 2 x + 7 = 2 x - 2
continue
P = - 5 x + 7 - 8 + 3 x + x = - x - 1
Q = 3 x + 5 - x - 3 x + 3 = - x + 8
R = - 4 x² - 2 x² + 3 x - 1 - 2 x + 3
= - 6 x² + x + 2
