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4m﹣m=3 2a3﹣3a3=﹣a3 a2b﹣ab2=0 yx﹣2xy=xy
5x2y与xy ﹣5x2y与yx2 5ax2与yx2 83与x3
5x2y与 xy -5x2y与 yx2 5ax2与 yx2 83与x3
X.2与Y.2 XY与X.2 X.2与YX YX与Y.2
3a2b与﹣2ba2 2xy与yx 16与﹣ ﹣2xy2与3yx2
YX:24576,YC://16384,YT:2048,计算量:8192; YX:32768,YC://16384,YT:4096,计算量:6144; YX:16384,YC://12288,YT:3072,计算量:4096; YX:32768,YC://16384,YT:4096,计算量:8192。
3x2y与3xy2 2abc与-3ac 2xy与2ab -2xy与3yx
2x+2y=2xy (x2y3)2=x4y5 (xy)2÷=(xy)3 2xy﹣3yx=xy
2x+2y=2xy (x2y3)2=x4y5 (xy)2÷=(xy)3 2xy﹣3yx=xy
3x2y与-3xy2 3xy与-2yx 2x与2x2 5xy与5yz
3x2y与3xy2 2abc与-3ac 2xy与2ab 2xy与-yx
3xy与-2yz是同类项 5xy与6yx是同类项 2x与x2是同类项 2x2y与2xy2是同类项