X2 +X-20
What are the factors of the expression
(x + 5) and (x-4)
(x - 5) and (x+4)
(X - 5) and (x-4)
(x + 5) and (x + 4)

42

step-by-step explanation:

step-by-step explanation: 4 cause 2+2=4

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