Question

выполните действие: (2+m)^2(2-m)^2

Answer 1

$displaystyle (2+m)^2*(2-m)^2=(2+m)(2+m)(2-m)(2-m)=\\=bigg ((2+m)(2-m)bigg)*bigg((2+m)(2-m)bigg)=\\=(4-m^2)(4-m^2)=(4-m^2)^2=\\=16-8m^2+m^4$