( 1 )X4=4
( 2 )X( 3 )=6
( 2 )+( 2 )=( 2 )X( 2 )=( 4 )为什么?我不理解
)X4=4 ()X()=6 ()+()=()X()=()
)X4=4 ()X()=6 ()+()=()X()=()
)X4=4 ()X()=6 ()+()=()X()=()
)X4=4 ()X()=6 ()+()=()X()=()
数学人气:994 ℃时间:2020-05-16 13:08:51
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