Please no links will mark brainiest for compleat answer.
question is in pic below

Answer:
A = 16[tex]x^{10}[/tex]
Step-by-step explanation:
The area (A) of a square is calculated as
A = s² ( s is the side length )
Here s = 4[tex]x^{5}[/tex] , then
A = [tex](4x^5)^{2}[/tex]
= 4 × 4 × [tex]x^{5}[/tex] × [tex]x^{5}[/tex]
= 16 × [tex]x^{(5+5)}[/tex]
= 16[tex]x^{10}[/tex]