Question

Дам 20 баллов помогите

Answer 1

$2x^2+4xy+2y^2=2(x^2+2xy+y^2)=2(x+y)^2\ 6x^2-12xy+6y^2=6(x^2-2xy+y^2)=6(x-y)^2\ 3a^2-6a+3=3(a^2-2a+1)=3(a-1)^2\ 5m^2+10m+5=5(m^2+2m+1)=5(m+1)^2\ 2xy^2+4xy+2x=2x(y^2+2y+1)=2x(y+1)^2\ 3a-6ab+3ab^2=3a(1-2b+b^2)=3a(1-b)^2$