-(5y-3)的平方+3=0

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-(5y-3)的平方+3=0

-(5y-3)的平方+3=0
-(5y-3)的平方+3=0

-(5y-3)的平方+3=0
-(5y-3)²+3=0
(5y-3)²=3
5y-3=±√3
5y=3±√3
y=(3±√3)/5