如题所述
第1个回答 2020-04-18
45X6+28X8
=45X6+28X2X4
=45X6+56X4
=45X6+56X(6-2)
=45X6+56X6-56X2
=(45+56)X6-112
=101X6-112
=606-112
=494
=45X6+28X2X4
=45X6+56X4
=45X6+56X(6-2)
=45X6+56X6-56X2
=(45+56)X6-112
=101X6-112
=606-112
=494
如题所述
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