Răspunsuri

2014-09-26T09:55:04+03:00
9x^2+2*3x*1+1-(x^2+2*x*3+9)= 9x^2+6x+1-x^2-6x-9=8x^2-8=8(x^2-1)=8(x+1)(x-1)
what ? :)) steluta inseeamna ori adica inmultire si < inseamna la a 2-a
daa
ok ms mult
2014-09-26T14:24:41+03:00
9x² +6x +1 -x² -6x -9 =8x² -8 =8(x²-1)=8( x+1)(x -1)