Sa se rezolve ecuatiile urgent: 1)(x-1)^2+(x+2)^2=(x+1)^2+(x-2)^2.
2)(2x+3)^3+(✓5x-1)^2=(3x-1)^2-2(✓5x-1)
3)2x-(x+2)(x-2)=5-(x-1)^2
4)(x-1)^2-(x+3)(x-3)=8