Question

Rezolvati in R ecuatia:(x-2)²-2=3-2x+(x-1)(x+1)

Answer 1

$(x-2)^2-2=3-2x+(x-1)(x+1) \\ x^2-2 \cdot x \cdot 2+2^2-2=3-2x+x^2-1 \\ x^2-4x+4-2=3-2x+x^2-1 \\ x^2-4x+2x-x^2=3-1-4+2 \\ -2x=0 \\ x=0$