Sagot :
bonjour
x
3 x
3 x + 10
3 x + 10 + 2 x
N = 5 x + 10
N = 5 ( x + 2 )
pour x = 3 , N = 15 + 10 = 25
poir x = - 2 , N = - 10 + 10 = 0
Bonjour,
1) N = 3x + 10 + 2x
2) 3x + 10 + 2x = 5x + 10
3) 5x + 10 = 5(x+2)
4) a) si x=3, N = 5(3+2) = 25
b) si x=-2, N = 5(-2+2) = 0