Răspunsuri

2014-04-28T16:04:47+03:00
3x-6+8=x²-1-(x²+4x+4)
3x+2=x²-1-x²-4x-4
3x+2=-4x-5
3x+4x=-5-2
7x=-7/:7
x=-1.
Sper ca te-am ajutat!
1 1 1
2014-04-28T16:13:01+03:00
3x-6+8= x^2-1-x^2-4x-4
3x+2=-4x-5
7x+7=0
7(x+1)=0
x+1=0
x=-1