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Anabellaioana
a fost răspuns

E(x)=(x-2/x^2-4*5x+10/x-3+1)*x-3/x+2

Răspuns :

Renatemambouko
E(x)=[(x-2)/(x²-4)*(5x+10)/(x-3)+1]*(x-3)/(x+2)=
=[(x-2)/(x-2)(x+2)*(5x+10)/(x-3)+1]*(x-3)/(x+2)=
=[(5x+10)/(x+2)(x-3)+1]*(x-3)/(x+2)=
=[5x+10+(x+2)(x-3)]/(x+2)(x-3)*(x-3)/(x+2)=
=(5x+10+x²+2x-3x-6)/(x+2)²=
=(x²+4x+4)/(x+2)²=
=(x+2)²/(x+2)²=1

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