分解因式:
(1)x3﹣6x2+9x
(2)(x﹣2)2﹣x+2.
(3)(x2+y2)2﹣4x2y2.
解:(1)原式=x(x2﹣6x+9)=x(x﹣3)2;
(2)原式=x2﹣4x+4﹣x+2=x2﹣5x+6=(x﹣2)(x﹣3);
(3)原式=(x2+y2+2xy)(x2+y2﹣2xy)=(x+y)2(x﹣y)2.
— . In my opinion, it can help you become a person full of love.
借走后还剩____本。
现在还有____本。