Question

descompunerea in factori a expresiei x^3+x-x^2-1

Answer 1

x³+x-x²-1=x(x²+1)-(x²+1)
              =(x²+1)(x-1)

Answer 2

$(x-1)$$x^3+x-x^2-1=x(x^2+1)-x^2-1=x(x^2+1)-(x^2+1)=(x^2+1)$