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Gabizarnica
a fost răspuns

Reducand termenii asemenea :E(x)=x(3-2x)+(x-1)-(x+4)(x-4)

Răspuns :

Alitta
E(x)=x(3-2x)+(x-1)-(x+4)(x-4) =
       =3x - 2x² + x - 1 - x² + 4² =
       = - 3x² + 4x + 15
E(x)=x(3-2x)+(x-1)-(x+4)(x-4)
E(x) = 3x-2x²+x-1-(x²-16)
E(x) =3x-2x²+x-1-x²+16
E(x) = 4x-3x²+15
E(x)=-3x²+4x+15

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