Respostas

2013-12-07T17:24:11-02:00
A) 3x + 3y
b) 7x - 14y
c) 2x² + 2xy
d) 4ax + 4bx
e) 2x³ - 4x² + 10x
2013-12-07T17:31:08-02:00
a) 3(x+y)= 3x+3y
b) 7(x-2y)= 7x-14y
c) 2x(x+y)= 2x²+2xy
d) 4x(a+b)= 4xa+4xb
e) 2x(x²-2x+5)= 2x³-4x²+10x

Espero ter ajudado ;D
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