S-1f(x)=(m+2)x−4 / mx+2m−3 (fof)(x)=x ise m=?

S-2 f(x)=2x-1 / x-1 (fog)(x)=4f(x) ise g(2)=?

2:
https://img831.imageshack.us/img831/6898/72408741.jpg