答:
若他们同类项,则x和y的次数都相等.
x的次数都为2.
则2n+1=5,即n=2
所以n=2时,是同类项.
n= 时7x^2y^2n+1与-1/3x^2y^5是同类项
n= 时7x^2y^2n+1与-1/3x^2y^5是同类项
数学人气:566 ℃时间:2020-04-02 04:45:06
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