计算：8x^2y^4(-3x/4y^2)/(-x^2y/2)
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计算：8x^2y^4(-3x/4y^2)/(-x^2y/2)计算：8x^2y^4(-3x/4y^2)/(-x^2y/2)计算：8x^2y^4(-3x/4y^2)/(-x^2y/2)8x²y^
计算：8x^2y^4(-3x/4y^2)/(-x^2y/2)
计算：8x^2y^4(-3x/4y^2)/(-x^2y/2)
计算：8x^2y^4(-3x/4y^2)/(-x^2y/2)
8x²y^4(-3x/4y²)/(-x²y/2)
=2x²(-3x)y²/(-x²y/2)
=12xy
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计算：8x^2y^4(-3x/4y^2)/(-x^2y/2)
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