等式两边同除以b^2
得(a/b)^2+a/b-1=0
(a/b)^2+a/b+1/4-1/4-1=0
(a/b+1/2)^2-5/4=0
(a/b+1/2+√5/2)(a/b+1/2-√5/2)=0
a/b=-√5/2-1/2
或a/b=√5/2-1/2
等式两边同除以b^2
得(a/b)^2+a/b-1=0
(a/b)^2+a/b+1/4-1/4-1=0
(a/b+1/2)^2-5/4=0
(a/b+1/2+√5/2)(a/b+1/2-√5/2)=0
a/b=-√5/2-1/2
或a/b=√5/2-1/2