Sagot :
a = 5(x+3)
b =
c = 7(6x+5)
d = 3(3x²-2)
e = 4x(-2x+3x)
f = 4x(7+5x)
g = 5x²(2x+3)
h = 7x(-x²+6x+2)
Il faut achever les exercices
a = 5(x + 3)
b = 14x + 17 rien à faire
c = 7(6x + 5)
d = 9(x² - 2/3) = 9(x - rac(2/3))(x + rac(2/3))
e) = -4x(2x - 3)
f) = 4x(5x + 7)
g) = 5x²(2x + 3)
e) = 11x(2x - 1)
h) = 7x(x² + 6x + 2) = 7x(x + 3 - rad(7))(x + 3 + rad(7))