分解因式1.a³-ab² 2.3ax²-6axy+3ay²
问题描述:
分解因式1.a³-ab² 2.3ax²-6axy+3ay²
答
-
a³-ab²
=a(a²-b²)
=a(a+b)(a-b)
-
3ax²-6axy+3ay²
=3a(x²-2xy+y²)
=3a(x-y)²