1234^2+3764×2468+3764^2-9 - 知识问答

1234^2+3764×2468+3764^2-998^2

2个回答

1234^2+3764×2468+3764^2-998^2
=1234^2+2x3764×1234+3764^2-998^2
=(1234+3764)^2-998^2
=5000^2-998
=(5000+998)(5000-998)
=5998x4002
=(6000-2)x4002
=24012000-8004
=24003996

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