bonsoir
a = 5 x + 15 + 2 x - 4
a = 7 x + 11
b = 5 x - 2 x² - 5 x + 45
b = - 2 x² + 45
c = - 18 x² + 3 x + x^3 - 2 x²
c = x^3 - 20 x² + 3 x
d = 2 x² + 5 x - 1 - 6 x + 5 + 3 x - 2
d = 2 x² + 2 x + 2
e = 30 x² + 18 x + 5 x + 3
e = 30 x² + 23 x + 3
f = x² - 3 x - 6 x + 18
f = x² - 9 x + 18
g = - 8 x + 6 + 28 x² - 21 x
g = 28 x² - 29 x + 6
h = x² + 10 x + 25
i = x² - 18 x + 81
j = 9 x² + 12 x + 4
k = 1 - 16 x + 64 x²
l = x² - 25
m = 36 x² - 9