Question

efetue e calcule o valor numérico para x=4

Answer 1

(1/x-1) - (x/x²-2x+1)

(1/4-1) - (4/4²-2*4+1)

(1/3) - (4/16-8+1)

(1/3) - (1/4-9)

(1/3) - (1+36/4)

(1/3) - (37/4)

4-111/12

-107/12

Espero ter ajudado!