BONSOIR AIDEZ MOI SVP DM DE MATHEMATIQUE

(2x+3)² +(2x+3)(x-1)
4x²+12x+9 +2x²-2x+3x-3
6x² +13x+6

(2x+3)(2x+3-x+1)
(2x+3)(x+4)

pour x = -2/3
6x²+13x+16
6(-2/3)² +13(-2/3) +16
6(4/9)  -26/3 +16
24/9 -26/3+16
8/3 -26/3 +16
- 18/3 +16
-6 +16
+10

2/
g = 3x(x-1) +2(x-12)
g = 3x²-3x+2x-24
g = 3x²-x-24

h = (x-3)(3x+8)
h = 3x²+8x-9x-24
h = 3x²-x-24

donc g =h



4/

d = V81 +7V3-V27
d = V9² +7V3 -V3²x3
d = 9 +7V3-3V3
d = 4V3 +9

e = V3(5-V3) -(V3+3)
e = 5V3-3 -V3-3
e = 4V3-6