F(x) =2x-9/x-5 помогите​

Question

F(x) =2x-9/x-5 помогите​

Answer 1

(2x-9)'×(x-5)-(2x-9)×(x-5)'

___________________ =

(x-5)до квадрата

= (2)×(x-5)-(2x-9)×(1)

________________

(x-5)до квадрата