Step-by-step explanation:
(f○g)(-3)
= f(g(-3))
g(-3) =
[tex] \frac{2}{2( - 3) - 1} [/tex]
g(-3) = -2/7
f(-2/7) = (-2/7)^2 + 2(-2/7) -4
= 4/49 - 4/7 - 4
= 4/49 - 28/49 - 196/49
= -220/49
please check again ^-^
