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simplificati fractia E(X)=X²-25/X²-9X+20

Răspuns :

E(X)=X²-25/X²-9X+20=[(x-5)(x+5)]/[(x-5)(x-4)]=
=(x+5)/(x-4)

e(x)=x²-25/x²-9x+20

[(x-5)(X+5)]\ (x-5)(x-4)

(x+5)(x-4)....................