2016-05-17 | 0
(1)(﹣x﹣y)(x﹣y)+(x+y)2;(2)(2a6x3﹣9ax6)÷(3ax3);(3)(2x﹣5)(2x+5)﹣(2x+1)(2x﹣3);(4);(5)﹣23+8﹣1×(﹣1)3×(﹣)﹣2+7°;(6)(2x﹣y+1)(2x+y﹣1);(7);(8)(a+2)(a2+4)(a4+16)(a﹣2);(9)(x﹣y)2(x2+y2)2(x+y)2;(10)(5m3n2)2(﹣2m2)3(﹣n3)4;(11)(π﹣3)0+(﹣0.125)2009×82009;(12)(2am﹣3bn)(3an+5bm);(13)(x+y)(x﹣y)﹣(x﹣y)2;(14)(﹣2a2+3a)﹣(a2﹣2a+1);(15)﹣2a(a2b+a﹣1)(16)[x4y﹣2x2(x2﹣3xy2)]÷(﹣2x3)(17)(2m+n)(3n+1)(18)1012(19)199×201(20)20082(21)782(22)(a+b+1)(a+b﹣1)(23)(a﹣b)(a+b)(a2+b2)(24)(66x6y3﹣24x4y2+9x2y)÷(﹣3x2y)
2016-05-18 | 0
2016-05-20 | 0
2016-05-21 | 0
2016-05-23 | 0
2016-05-27 | 0