Найти f(-1),если f(x)=(2x+1)(3/x-3)

Question

Найти f(-1),если f(x)=(2x+1)(3/x-3)

Answer 1

f(-1) = (-1•2+1) (3/-1-3) = (-2+1) (3/-4) = -1 • -3/4= 3/4

Answer 2

F(-1) = (-2+1)*(-3/-1-3)=-1*(-3/4)=3/4