因式分解计算 621²-148²-769×373

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因式分解计算 621²-148²-769×373

621²-148²-769×373
=(621+148)(621-148)-769×373
=769×473-769×373
=769×(473-373)
=769×100
=76900

621²-148²-769×373
=(621+148)(621-148)-769×373
=769×473-769×373
=769×(473-373)
=769×100
=76900