Answer:
(x^n+8) (x^n+2)
Step-by-step explanation:
x^2n + 10x^n +16
Let x^n = m
m^2 + 10m +16
Factor
What 2 numbers multiply to 16 and add to 10
2*8 =16
2+8 = 10
(m+8) (m+2)
Replace m with x^n
