Question 757313

1.

{{{h^2-9hs+9s^2}}}

{{{h^2-9s(h+s)}}}

2.

{{{-a^3-2a^2-a}}}

{{{-a(a^2+2a+1)}}}

{{{-a(a+1)^2}}}

{{{-a(a+1)(a+1)}}}