若2x的三次方y的n次方与5x的m次方y是同类项,则n的m次方=?—What's your mother?—She 's____._英语解答

若2x的三次方y的n次方与5x的m次方y是同类项,则n的m次方=?
—What's your mother?—She 's____.A a woman B my mother C a nurse D a doctor

人气：294 ℃　时间：2020-05-09 12:36:13

解答

2x的三次方y的n次方与5x的m次方y是同类项
m=3
n=1
n的m次方=1³=1