55×66+66×77+77×88+88×99用简便方法计算的解释

55×66+66×77+77×88+88×99用简便方法计算的解释
2025-03-22 16:06:51
推荐回答(3个)
回答1:

55×66+66×77+77×88+88×99
=5×11×6×11+6×11×7×11+7×11×8×11+8×11×9×11
=(5×6+6×7+7×8+8×9)×11×11
=(30+42+56+72)×11×11
=200×11×11
=24200

回答2:

y man, who will be always by your side."

回答3:

回来过唐筛来几次😝😝😜😝😞😞😞😞