有關.1025x的精選大全

計算.(1)(0.25x-)(0.25x+0.25);(2)(x-2y)(-2y-x)-(3x+4y)(-3x...
問題詳情:計算.(1)(0.25x-)(0.25x+0.25);(2)(x-2y)(-2y-x)-(3x+4y)(-3x+4y);(3)(2a+b-c-3d)(2a-b-c+3d);(4)(x-2)(16+x4)(2+x)(4+x2).【回答】(1)x2-(2)8x2-l2y2(3)(2a-c)2-(b-3d)2(4)x8-256【解析】試題分析:(1)把小數化為分...
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