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Simplificati fractia E(x)= x(la puterea a doua) -10x +25 / x(la puterea a doua) - 25

Răspuns :

E (x) = (x-5)² / (x-5)(x+5) = x-5/x+5
E(x)=(x-5)²/(x-5)(x+5)=(x-5)/(x+5)