Sil vois plait cest urgent de laide mercu davance

E=(9x-9)(4x-4)
=36x²-36x-36x+36
=36x²-72x+36

F=(3x-3)(12x-12)
=36x²-36x-36x-36
=36x²-72x-36

G=(-6x+6)(-6x+6)
=36x²-36x-36x+36
=36x²-72x+36

H=(6x-6)²
=36x²-72x+36