简便运算:11×11×11-11×11-10.
人气:103 ℃ 时间:2020-04-23 06:42:58
解答
11×11×11-11×11-10
=11×11×(11-1)-10
=11×11×10-10
=10×(11×11-1)
=10×【11×(10+1)-1】
=10×(11×10+11-1)
=10×(110+10)
=10×120
=1200
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