网址:http://m.1010jiajiao.com/timu_id_647569[举报]
(1)(___________);
(2)2a-3(b-c)=___________.
(-3)-()+(-1)-
(1)(-)-1+()2013×(-)2014(2)[(x+2y)2-(x+2y)(x-3y)]÷(5y)