bonjour
3)
A = 3x+5x = 8x
B = -3t-8t = -11t
C = 8x²+2x
D = -5y² + 2y² = -3y²
E = 8x+3x-2x = 9x
F = -15a²+a²+2 = -14a²+2
G = -3y+12+25y = 22y+12
H = 19b-25b²+25
I = -5+18z²-24z² = -6z²-5
J = 3x-5x²-8x-2x² = -7x²-5x
K = -5x²+18x-5+15x² = 10x²+18x-5
L = -8,5x²- 5,1x+2,4+2,8x+2,3x² - regroupe les x² et les x entre eux -
4)
A = 3 - 2t -3 = 2t
B = 5t -3t + 5 = 2t - 5
etc etc
:)
