ax^2+ay^2-az^2-2axy
=a[(x^2+y^2-2xy)-z^2]
=a[(x-y)^2-z^2]
=a(x-y+z)(x-y-z)
因式分解ax^2+ay^2-az^2-2axy
因式分解ax^2+ay^2-az^2-2axy
數(shù)學人氣：792 ℃時間：2020-03-27 10:05:33
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