Question

what are the steps to finding (5m^2-4p^2)^2

Answer 1

(5m^2-4p^2)^2
=(5m^2-4p^2)(5m^2-4p^2)
=25m^4-20mp^2-20mp^2+16p^4
=25m^4-40mp^2+16p^4

Answer 2

this is binomial expansion

(5m^2 - 4p^2)(5m^2 - 4p^2)