Question

va rog repede ajutati ma!​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

E(0)= 0+ ( (-3/1)-(1/3)-2)): (-8/3)=0+(-3-1/3-2)*(-3/8)=(-16/3)*( -3/8)=2

b)

E(x)=2x/(x+1) +(x-3)/(x+1)+(x+1)/(x-3)-2):8/(x-3)

=2x/(x+1)+((x-3)^2+(x+1)^2-2*(x+1)(x-3))/(x+1)(x-3))*(x-3)/8

=2x/(x+1)+(((x^2-6*x+9+x^2+2*x+1-2*(x^2-2*x-1))/(x+1)(x-3))*((x-3)/8))

2x/(x+1)+((+16)/(x+1)(x-3))*(x-3)/2=2x/(x+1)+2/(x+1)

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