Activité 2 - Calcul algébrique : applications

b)
Applique la distributivité simple.
2 . (a + b) =
2 . a + 2. b
2a + 2b
a . (a + b) =
a . a + a . b
a2 + ab
a . (2b + c) =
a . 2b + a . c
2ab + ac
2a . (b + 3a) =
2a . b + 2a . 3a
2ab + 6a2
3a . (2b + 4c) =
3a . 2b + 3a . 4c
6ab + 12ac
x . (x + 2y) =
x . x + x . 2y
x2 + 2xy
2 . (b + 1) =
2 . b + 2 . 1
2b + 2
b . (c + 3b) =
b . c + b . 3b
bc + 3b2
3 . (a + 5) =
3 . a + 3 . 5
3a + 15
6a . (a + 2b) =
6a . a + 6a . 2b
6a2 + 12ab