Answer:
3
Step-by-step explanation:
using the rule of radicals
× ⇔
= = × = 3
x^2+x-4
(f-g)=(x^2+1)-(5-x)
=x^2+1-5+x
=x^2+x-4
possible answers are shown in picture.
(2⁶)ˣ = 1
2⁶ˣ = 1
6x = 0
x = 0