JE NE COMPREND PAS CET EXERCICE :
reduire ( si possible ) chaque expression :
A= x + x
b = x - x
c = x + x + x + x + x
d = 6 x - 9 x
e = 3 + 5 x
f =7 x ² - 11 x ²
g = 7 x + 8 x² - 10 x - 3 x²
h = 7 x² + 4 x - 10 x² + x
i = 7 x² +2 x
j = 5 + 3 x
k = 18 -2 x²
l = 8 x + 11 x² + 5
m = 7x + x - 8 x - 3 x + x
n = - 10 x + 4 x² - 3 + 2 x - 5 x² + 20
o = -4 x² - 11 x²
p = 13 x + 10x²
q = 5 x - 8 + 4 x² - 9x² + 10 x
r = 5 x + 7x² - x + x²
MERCIII