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se considera expresia E(x) = 2x + x2 - 3(x+1). Calculati E(-1) +E(radical 3)​

Răspuns :

E(-1)=2*(-1)+(-1)^2-3(-1+1)

E(-1)=-2+1-3*0

E(-1)=-2+1-0

E(-1)=-1

E(√3)=2√3+√3^2-3(√3+1)

E(√3)=2√3+3-3√3-3

E(√3)=-√3

E(-1)+E(√3)=(-1)+(-√3)=-1-√3=-(1+√3)