3ax的二次方-3ay的二次方
问题描述:
3ax的二次方-3ay的二次方
答
3ax²-3ay²
=3a(x²-y²)
=3a(x+y)(x-y)
3ax的二次方-3ay的二次方
3ax²-3ay²
=3a(x²-y²)
=3a(x+y)(x-y)