Question

(a^3-6a)^2
Выполните действия
(2+m)^2(2-m)^2

Answer 1

1) a^6-12a^4+36a^2=
a^2(a^4-12a^4+36)
2)
(4+4m+m^2)(4-4m+m^2)=
=16-16m+4m^2+16m-16m^2
+4m^3+4m^2-4m^3+m^4=
=16-8m^2+m^4=
(4-m^2)