Question

Ajutor Dau Coroana ! ! !

Answer 1

Răspuns:

-3

Explicație pas cu pas:

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

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

E(x)= x - [(2x +5) / x+3]  * (x+3)/(2x+5) *(x+3)

E(x) = x - x - 3 => E(x) = -3;