x²-3kxy+1/3xy-8
=x²+(1/3-3k)xy-8
所以1/3-3k=0
k=1/9
当k=?多项式x²-3kxy+1/3xy-8中不含xy项
当k=?多项式x²-3kxy+1/3xy-8中不含xy项
数学人气:459 ℃时间:2019-09-23 08:40:34
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