3ax的2次方-6axy+3ay的二次方 急要!
问题描述:
3ax的2次方-6axy+3ay的二次方 急要!
答
3ax^2 - 6axy + 3ay^2
=3a(x^2 - 2xy + y^2)
=3a(x-y)^2
答
3ax^2-6axy+3ay^2
=3a(x^2-2xy+y^2)
=3a(x-y)^2