问题
解答题
计算：3xy2÷(-
|
答案
3xy2÷(-
)3•(6y2 x
)212y x
=-3xy2÷
×6x3y6 x3 12x2y2 x2
=-3xy2×
×x3 216y6 144y2 x2
=-
．2x2 y2
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计算：3xy2÷(-
|
3xy2÷(-
)3•(6y2 x
)212y x
=-3xy2÷
×6x3y6 x3 12x2y2 x2
=-3xy2×
×x3 216y6 144y2 x2
=-
．2x2 y2