Question

разложыть на квадрат разности (-3-2)^2;

Answer 1

$(-3-2)^2=(-3)^2-2cdot(-3)cdot2+2^2=9+12+4=25$

Answer 2

$(-3-2)^2=Big (-(3+2)Big )^2=underbrace {(-1)^2}_{+1}cdot (3+2)^2=(3+2)^2=\\=3^2+2cdot 3cdot 2+2^2=9+12+4=25$