来自楼建勇的问题
(1)分解因式:x3y-xy3.(2)化简:a2−4a+2÷(a−2)×1a−2.
(1)分解因式:x3y-xy3.
(2)化简:a2−4a+2÷(a−2)×1a−2.
1回答
2020-01-1610:14
(1)分解因式:x3y-xy3.(2)化简:a2−4a+2÷(a−2)×1a−2.
(1)分解因式:x3y-xy3.
(2)化简:a2−4a+2÷(a−2)×1a−2.
(1)x3y-xy3=xy(x2-y2)=xy(x+y)(x-y);
(2)原式=(a+2)(a−2)a+2