(1+123+234)×(123+234+345)-(1+123+234+345)×(123+234)
(1+123+234)×(123+234+345)-(1+123+234+345)×(123+234)
(1000+123+234)×(123+234+345)-(1000+123+234+345)×(123+234)
计算 123 +234 +345 …………+282930
计算:123 +234 +345 …………+282930
(2+23+234)×(23+234+2345)-(2+23+234+2345)×(23+234)等于多少,
123×123+123
123+1+123=?
简便计算 123+123+123+456
(123分之321+234分之345+543分之432)*(234分之345+543分之432+321分之123)-(1
123+234+345+456=?
123*234*345*456=
123^2+234^2+345^2+2*123*234-2*123*345-2*234*345