Which equation shows a valid, practical step in solving 4 sqrt 2x-8+ 4 sqrt 2x+8=0

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

77

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