Respuesta :

Answer:

Step-by-step explanation:

4*side=40x^4+16x^2

side=10x^4+4x^2

area=(10x^4+4x^2)^2=(x^2)^2(10x^2+4)^2

=x^4(100x^4+80x^2+16)

=100x^8+80x^6+16x^4 sq. units.