123456789×123456789等于多少以及分析?
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123456789×123456789
=(123456790-1)^2
=123456790^2-246913579
=1234567898765432100÷81-246913579
=411522632921810700÷27-246913579
=137174210973936900÷9-246913579
=45724736991312300÷3-246913579
=15241578997104100-246913579
=15241578750190521
=(123456790-1)^2
=123456790^2-246913579
=1234567898765432100÷81-246913579
=411522632921810700÷27-246913579
=137174210973936900÷9-246913579
=45724736991312300÷3-246913579
=15241578997104100-246913579
=15241578750190521
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