因式分解：3x^3y^2-6x^2y-12xy^2
问题描述：
因式分解：3x^3y^2-6x^2y-12xy^2
答
a²(x-y)+16(y-x)
=a²(x-y)-16(x-y)
=(x-y)(a²-16)
=(x-y)(a+4)(a-4)
(x²+y²)²-4x²y²
=(x²+y²+2xy)(x²+y²-2xy)
=(x+y)²(x-y)²
答
3x³y²-6x²y-12xy²
=3xy(x²y-2x-4y)
答
原式=3xy(x²y-2x-4y)
答
原式=3xy(x^2y-2x-4y)
不能再分解了
不懂，请追问，祝愉快O(∩_∩)O~