Question

Выполните действие: (2+m)^2(2-m)^2

Answer 1

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