Question

forma cea mai simpla a expresiei E(x)=x•x^2-3x^3 este:A.2x B.-4x^2 C.-2x^3 D.3x

Answer 1

$E(x)=x*x^{2}-3x^{3} = x^{3}-3x^{3}=x^{3}(1 - 3) = x^{3}*(-2)=-2x^{3}$

Raspuns: C.

Answer 2

E(x) = x*x² - 3x³ =
       =   x³ - 3x³ =
       =   - 2x³   =. Raspuns C.