x^2n(x^2-2n-2x^1-2n+x^-2n)注:^是(多少次方)别误会如:2x^3y 别误会成3y别抄袭啊
问题描述:
x^2n(x^2-2n-2x^1-2n+x^-2n)
注:^是(多少次方)别误会如:2x^3y 别误会成3y
别抄袭啊
答
x^2n(x^2-2n-2x^1-2n+x^-2n)
注:^是(多少次方)别误会如:2x^3y 别误会成3y
别抄袭啊