化简计算(x^-1/2y)(x^2+1/2y)(x^4+1/4y^2)
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化简计算(x^-1/2y)(x^2+1/2y)(x^4+1/4y^2)
化简计算(x^-1/2y)(x^2+1/2y)(x^4+1/4y^2)
化简计算(x^-1/2y)(x^2+1/2y)(x^4+1/4y^2)
(x^2-1/2y)(x^2+1/2y)(x^4+1/4y^2)
=(x^4-1/4y^2)(x^4+1/4y^2)
=x^8-1/16y^4
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