Răspunsuri

2014-03-23T20:26:21+02:00
25( 2x²+ 2*2x*3+ 3²) - 36(x²- 2*x*1+1²)
25( 4x²+ 12x+9)- 36( x²-2x+1)
100x²+300x+ 225 -36x²+ 72x-36
64x²+ 372x+ 189
1 1 1
2014-03-23T20:49:16+02:00
Avem o diferenta de patrate si descompunerea este
[5(2x+3)-6(x-1)][5(2x+3)+6(x-1)]= [10x+15-6x+6][10x+15+6x-6]=
(4x+21)(16x+9)
1 5 1