Réponses

2014-01-20T21:18:29+01:00
Exo 62:

A= (2x + 5) (2x - 5)
A= 2x^2 - 25

B= (x - 3) (x + 3)
B= x^2 - 9

C= (5a + 2) (5a - 2)
C= 25a^2 - 4

D= (3 + 5b) (3 - 5b)
D= 25b^2 - 9

Exo 58:

G= (5a - 2)^2
G= 25a^2 - 10a + 4

H= (3 x 2x )^2
H= (6x)^2
H= 36x^2

I= (2 + 5x)^2
I= 25x^2 + 10x + 4

J= (6a - 2)^2
J= 36a^2 - 12a + 4

K= (3 + 5x)^2
K= 25x^2 + 15x + 9

L= (2 x 5x)^2
L= (10x)^2
L= 100x^2