Réponses

2013-11-22T19:25:37+01:00
A = (7/3)(6x+3)+(5/2)(4-2x)
A = (42x/3)+7+(10-5x)
A = (42x/3)+17-5x
A = (42x/3)-(15x/3)+17
A = (27x/3)+17
A = 9x+17

B = 4(1-7y)+(4y-5)(y-1)
B = 4-28y+4y²-4y-5y+5
B = 4y²-37y+9

C = 3t(t+1)+(5+t)(t-2)
C = 3t²+3t+5t-10+t²-2t
C = 4t²+6t-10

D = (4k-1)(9+k)-9k(10-3k)
D = 36k+4k²-9-k-90k-27k²
D = -23k²-55k-9

E = (m+2)(8+3m)-2(1-m)(m-7)
E = 8m+3m²+16+6m-2(m-7-m²+7m)
E = 8m+3m²+16+6m-2m+14+2m²-14m
E = 5m²-2m+30