m,n互为相反数,1/6m的三次方n+1/3m的平方n的平方+1/6mn的三次方?

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/05 18:05:05
m,n互为相反数,1/6m的三次方n+1/3m的平方n的平方+1/6mn的三次方?

m,n互为相反数,1/6m的三次方n+1/3m的平方n的平方+1/6mn的三次方?
m,n互为相反数,1/6m的三次方n+1/3m的平方n的平方+1/6mn的三次方?

m,n互为相反数,1/6m的三次方n+1/3m的平方n的平方+1/6mn的三次方?
m,n互为相反数
∴m+n=0
1/6m^3 n+1/3m^2 n^2+1/6mn^3
=1/6mn(m^2+2mn+n^2)
=1/6mn(m+n)^2
=1/6mn * 0
=0