99999乘99999确切的答案,脱式.

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99999乘99999确切的答案,脱式.99999乘99999确切的答案,脱式.99999乘99999确切的答案,脱式.(100000-1)*99999=9999900000-99999=999980

99999乘99999确切的答案,脱式.
99999乘99999
确切的答案,脱式.

99999乘99999确切的答案,脱式.
(100000-1)*99999
=9999900000-99999
=9999800001

(100000-1)x(100000-1)=100000x100000-2x100000+1
=9999800001

[100000-1]*[100000-1]

(100000-1)x(100000-1)
=(100000-1)x100000-(100000-1)
=100000x100000-100000-(100000-1)
=100000x100000-100000-100000+1
=100000x100000-2x100000+1
=9999800001