Question

(x+2-x^2)^2-(2+x^2)^2
cu tot cu rezolvare va rog

Answer 1

$(x + 2 - x {}^{2} ) {}^{2} - (2 + {x}^{2} ) {}^{2}$

descompui cu formula a²-b²=(a-b)(a+b)

$(x + 2 - {x}^{2} - (2 + {x}^{2} )) \times ( x + 2 - {x}^{2} + (2 + {x}^{2} ))$

$(x + 2 - {x}^{2} - 2 - {x}^{2} ) \times (x + 2 - {x}^{2} + 2 + {x}^{2} )$

$(x - 2x {}^{2} ) \times (x + 4)$

factor comun pe x

$x \times (1 - 2x) \times (x + 4)$