因式分解4xy+1-4x^2-y^2

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因式分解4xy+1-4x^2-y^2因式分解4xy+1-4x^2-y^2因式分解4xy+1-4x^2-y^24xy+1-4x^2-y^2=1-(4x^2-4xy+y^2)=1-(2x-y)^2=(1+

因式分解4xy+1-4x^2-y^2
因式分解4xy+1-4x^2-y^2

因式分解4xy+1-4x^2-y^2
4xy+1-4x^2-y^2
=1-(4x^2-4xy+y^2)
=1-(2x-y)^2
=(1+2x-y)(1-2x+y)