Question

Rezolvati ecuatia: (x^2-x+2)^2-x^2(1-2x)=(x^2+2)^2-3(x+1).

Answer 1

⇒     x^4-x³+2x²-x³+x²-2x+2x²-2x+4-x²+2x³=x^4+4x²+4-3x-3
x^4+4x²-4x-x^4-4x²+3x=1-4
-x=-3    ·(-1)
x=3