Răspunsuri

2014-04-15T22:03:13+03:00
x(1-x)+(2-x)^2+(3+x)^2-1=(x-1)(4-x)+(2x-1)(2+x)
x-x
²+4+x²-4x+9+x²+6x-1=4x-x²-4+x+4x+2x²-2-x
x²+3x+12=x²+8x-6
x²+3x+12-x²+8x-6=0
11x+6=
11x=6
x=6/11