(3a+p)(3a-p)+p^2 Решите пожалуйста!
(3a+p)(3a-p)=3a^2-p^2
(3a+p)(3a-p)+p^2=3a^2-p^2+p^2=3a^2
(3a+p)(3a-p)+p^2=6a-p^2+p^2= 6a