Răspunsuri

2014-05-12T23:54:32+03:00
⇒x(x²-4x+4)+6x²-2-5x=(x²-1)(x+2)
x³-4x²+4x+6x²-5x-x=x³+2x²-x-2
x³+2x²-x-2=x³+2x²-x-2
x³-x³+2x²-2x²-x+x=2-2
0=0   nu are solutii