Respostas

2013-11-12T18:29:02-02:00
A 2x + 6 x= - 6/2 x = -3
b 2a + 2b
c 10y - 2 y= 2/10
d 4x - 12 x = 12/4 x= 3
e 4x + 14 x = 14/4 7/2
f 81x - 9x + 9x -1 81x -1 x = 1/ 81
g 4a - (xy) ao quadrado
2013-11-12T18:43:36-02:00
A) 2x + 6
b) 2a+2b
c) 10y - 2
d) 2x2 - 12
e) 4x + 14
f) 49x -1
g) 2a2 - 2xy
h) 122y