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
问题描述：
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
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