Question

sa se descompuna in factori primi E(x)=(x-1)la putereadoua -(x+2)la puterea doua

Answer 1

E(x)=(x-1)²-(x+2)²

E(x)=(x-1-(x+2))•(x-1+(x+2))

E(x)=(x-1-x-2)•(x-1+x+2)

E(x)=(-1-2)•(x-1+x+2)

E(x)=-3(x-1+x+2)

E(x)=-3(2x-1+2)

E(x)=-3(2x+1)