若(x^m÷x^2n)³÷x^m-n与¼x²是同类项且2m+5=6求m,n的值
1个回答
(x^m÷x^2n)³÷x^m-n
=X^(m-2n)/x^(m-n)
=X^(m-2n-m+n)
=x^(-n)
与¼x²是同类项
则-n=2
n=-2
2m+5=6
m=1/2
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