Представьте в виде многочлена
(p+8)^2=
(10x-3y)^2=
(x-9)+(x+9)=
(4m+7n)(7n-4m)=

(p+8)^2= p^2+16p+64

(10x-3y)^2=100x^2-60y+9y^2

(x-9)+(x+9)=x-9+x+9=2x

(4m+7n)(7n-4m)=28mn-16m^2+49n^2-28mn=49n^2-16m^2