191*192192-192*191191等于几

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191*192192-192*191191等于几
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191*192192-192*191191等于几
191*192192-192*191191等于几

191*192192-192*191191等于几
191*192192-192*191191
=191*192192-(191+1)*191191
=191*(192192-191191)-191191
=191*1001-191191
=0

191*192192-192*191191
原式=191*(191191+1001)-191191×(191+1)
=191×191191+191191-191191×191-191191×1
=0
经计算器验算正确
不懂,请追问,祝愉快O(∩_∩)O~

原式=191*(192000+192)-192*(191000+191)
=191*192000-192*191000
=1000*(191*192-192*191)
=0