Question

Va rog ajutati-ma cu acest exercitiu: (x-2)(x+2)($x^{2}$+4)

Answer 1

(x+2)(x-2) = $x^{2} -4$
deci
[tex] x^{2} -4+ x^{2} +4= 2 x^{2} => x= \sqrt{2} [/tex]

Answer 2

 $(x-2)(x+2)(x^2+4)=(x^2-4)(x^2+4)=x^4-16$