Question

已知a b互为相反数cd互为倒数,m的倒数等于它本身,求cd/m²+(a+b)m-丨m丨的立方根

Answer 1

M=1或-1

m=1时

(cd/m²+(a+b)m-丨m丨)^3

=(1/m² -m ）^3

=0

m=-1时

(cd/m²+(a+b)m-丨m丨)^3

=(1/m² -m ）^3

=2^3

=8