The functions f and g are defined on a suitable domain by f(x)=x^2-1 and g(x)=x^2+2'
a) find the expression for f(g(x))
b) factorise f(g(x))

you cant answer this dummy

step-by-step explanation:

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2