Question

simplificați raportul x patrat-1 supra x patrat-2x+1

Answer 1

(x∧2-1)/(x∧2-2x+1)=(x-1)(x+1)/(x-1)∧2=(x+1)/(x-1)

Answer 2

x²-1=(x+1)(x-1)   x²-2x +1=(x-1)(x-1)
(x²-1)/(x²-2x+1)=(x+1)/(x-1)