【234】(2 23 234)×(23 234 2345)-(2 23 234 2345)×(23 234....

发布时间:2021-04-04 00:31:07

(2+23+234)×(23+234+2345)-(2+23+234+2345)×(23+234)等于多少, 数学

网友回答

【答案】 (2+23+234)×(23+234+2345)-(2+23+234+2345)×(23+234)
  =2×(23+234+2345)+(23+234)×(23+234+2345)-2×(23+234)-(23+234+2345)×(23+234)
  =2×(23+234+2345)-2×(23+234)
  =2×2345
  =4690
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