计算:4x^2-4xy+y^2/2x+y/(4x^2-y^2)
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计算:4x^2-4xy+y^2/2x+y/(4x^2-y^2)
4x^2-4xy+y^2/2x+y÷(4x^2-y^2)
4x^2-4xy+y^2/2x+y÷(4x^2-y^2)
4x^2-4xy+y^2/2x+y÷(4x^2-y^2)
=(2x-y)^2/(2x+y)*1/(2x+y)(2x-y)
=(2x-y)/(2x+y)^2
=(2x-y)^2/(2x+y)*1/(2x+y)(2x-y)
=(2x-y)/(2x+y)^2
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