-x^5y-xy+2x^3y
问题描述:
-x^5y-xy+2x^3y
答
是要分解因式吗?
如果是,则
-x^5y-xy+2x^3y
=-xy(x^4-2x²+1)
=-xy(x²-1)²
=-xy(x+1)²(x-1)²