(2+23+234)×(23+234+2345)-(2+23+234+2345)×(23+234)等于多少,
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(2+23+234)×(23+234+2345)-(2+23+234+2345)×(23+234)等于多少,
![(2+23+234)×(23+234+2345)-(2+23+234+2345)×(23+234)等于多少,](/uploads/image/z/9524047-31-7.jpg?t=%EF%BC%882%EF%BC%8B23%EF%BC%8B234%EF%BC%89%C3%97%EF%BC%8823%EF%BC%8B234%EF%BC%8B2345%EF%BC%89%EF%BC%8D%EF%BC%882%EF%BC%8B23%EF%BC%8B234%EF%BC%8B2345%EF%BC%89%C3%97%EF%BC%8823%EF%BC%8B234%EF%BC%89%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91%2C)
(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
=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