填空题 4..5
(x-y+z)(-x+y+z)[z+(____)][______]=z^2-(____)^2,5,(-a+b+c)(a+b-c)=[b-(_____)][b+(_____...
(x-y+z)(-x+y+z)[z+(____)][_ __ __ _]=z^2-(____)^2, 5,(-a+b+c)(a+b-c)=[b-(_____)] [b+(______)]=[_______]
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