作业帮3√12/x*(1/2√3/xy²)/(-3/4√18/xy³)
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3√12/x*(1/2√3/xy²)/(-3/4√18/xy³)
3√12/x*(1/2√3/xy²)/(-3/4√18/xy³)
3√12/x*(1/2√3/xy²)/(-3/4√18/xy³)
3√12/x*(1/2√3/xy²)/(-3/4√18/xy³)=-（6/X √3 *1/2xy √3x）/ 9/4xy²√2xy
=-9√x /x²y *4xy²/9√2xy
=-2√2y /x