Question

Let f(x)= - 4x - 1 and g(x)=x² - 5
Find (fog)(-2).

Answer 1

$f(x) = -4x-1\\\\g(x) = x^2 -5 \\\\g(-2) = (-2)^2 -5 = 4 -5 =-1\\\\(f \circ g)(-2)\\\\=f(g(-2))\\\\=f(-1)\\\\=-4(-1) -1 = 4-1=3$