若m-m⼀1=3,则m^2+m^2⼀1=? m+m⼀1=?

2025-01-19 08:03:23
推荐回答(1个)
回答1:

答:
分数写反了,应该是1/m.
m^2+1/m^2=(m-1/m)^2+2
=3^2+2
=11

m+1/m
=√(m+1/m)^2
=√(m^2+1/m^2+2)
=√(11+2)
=√13