如果m²—3m+1=0.求m²+m²分之1的值
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如果m²—3m+1=0.求m²+m²分之1的值
如果m²—3m+1=0.求m²+m²分之1的值
如果m²—3m+1=0.求m²+m²分之1的值
m²—3m+1=0
m+1/m=3
m²+m²分之1
=(m+m分之1)²-2
=3²-2
=7
有理数,无解。。。