f(5)=7;f(-1)=1;f(1/3)=7/3;f(-2.1)=-0.1
Пошаговое объяснение:
f(5)=5^2-4/5-2=21/3=7
f(-1)=(-1)^2-4/-1-2=-3/-3=1
f(1/3)=(1/9 - 4) / (1/3 - 2) = (-35/9) / (-5/3) = 7/3
f(-2.1)=((-2.1)^2 - 4) / (-2.1 - 2) = (4.41 - 4) / ( -4.1) = 0.41 / (-4.1) = -0.1
