MathDB

76

Part of 1985 IMO Longlists

Problems(1)

Are there m,n such that 5m^2 - 6mn + 7n^2 = 1985 ?

Source:

9/14/2010
Are there integers mm and nn such that 5m2−6mn+7n2=1985 ?5m^2 - 6mn + 7n^2 = 1985 \ ?
quadraticsnumber theory unsolvednumber theory