㎡-m-1=0解:配方得:㎡-m+1/4-1/4-1=0(m-1/2)²=5/4开方得:x-1/2=±√(5/4)x=2分之(1±√5)
m²-m-1=0m²-m=1m²-m+1/4=1+1/4(m-1/2)²=5/4m+1/2=±√5/2m1=(√5-1)/2, m2=(-√5-1)/2
㎡-m-1=0解:配方得:㎡-m+1/4-1/4-1=0(m-1/2)²=5/4开方得:x-1/2=±√(5/4)x=2分之(1±√