Exercice 1 :
1. A = 4k²-6k²
A = -2k²
2. B = 2u-(-6u)
B = 8u
3. C = 7w-2w
C = 5w
4. D = -5v+3v
D = -2v
5. E = 8u²+10u²
E = 18u²
6. F = 2y-7y
F = -5y
7. G = 6u²-(-7w²)
G = 6u²+7w²
8. H = 6z*(-z)
H = -6z²
9. I = 10*9p
I = 90p
Exercice 2 :
1. A = -4m²-(-8m²)
A = 4m²
2. B = -2b²+2
B = -2b²+2
3. C = -6w²-u²
C = -6w²-u²
4. D = 3t²-10
D = 3t²-10
5. E = 3h*(-9h)
E = -27h²
6. F = -2k*7
F = -14k
7. G = 5w*7
G = 35w
8. H = -9*(-4u²)
H = 36u²
9. I = -2v²-(-8v²)
I = 6v²
Exercice 3 :
1. A = 8u²+10
A = 8u²+10
2. B = 6*4x²
B = 24x²
3. C = 8u²*(-10)
C = -80u²
4. D = -2w-2w²
D = -2w²-2w
5. E = 9v²-(-10v²)
E = 19v²
6. F = -6c*(-8)
F = 48c
7. G = -2r*(-10r)
G = 20r²
8. H = 3m²-10m²
H = -7m²
9. I = 4b²*4
I = 16b²
