Réponses

Meilleure réponse !
2014-04-21T20:53:02+02:00
A- 2x
b- x²
c - 3x
d- 3x+2
e- 2x²
f- x²+x
g- 0
h- 1+2x
i- x
j- 30x²
k- 20x
l-x² +x
2014-04-21T21:12:34+02:00
a. x + x = 2x
b. x * x = x²
c. 2x + x = 3x
d. 3x + 2 = 3x + 2
e. 2x * x = 2x²
f. x² + x =
x² + x
g. 0 * x = 0
h.
1 + 2x = 1 + 2x
i. 0 + x = x
j. 5x * 6x = 30x²
k. 4 * x * 5 = 20x
l. x * x + x = x² + x