Question

Va rog urgenttt!!!
am nevoie repede de ea!!

Answer 1

Răspuns:

$E(x)=\frac{x+1}{x+2}$

Explicație pas cu pas:

E(x) = [(2x-1)/(x²-4) - 3/(2-x)] : 5/(x-2)

= [(2x-1)/(x-2)(x+2) - 3/-(x-2)] : 5/(x - 2)

= [(2x-1)/(x-2)(x+2) + 3/(x-2)] : 5/(x - 2)

= [2x-1 + 3(x+2)]/(x-2)(x+2) × (x-2)/5

simplificam (x+2) si (x-2)

= (2x - 1 + 3x + 6)/5(x+2)

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

= 5(x+1)/5(x+2)

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