Respostas

2014-01-10T16:10:55-02:00
Olá João.

(2x+1)2=(3x-1).(5x-1)
4x+2=15x²-3x-5x+1
4x+2-15x²+3x+5x-1
-15x²+4x+3x+5x+2-1
-15x²+12x+1
2014-01-10T16:12:31-02:00