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Muh. Fadlan

Banyaknya pasangan yang memenuhi dalam sebuah persamaan

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Spoiler

Perhatikan bahwa soal ekuivalen dengan:

$$(1-xy+x-y)^2 = 4$$

 

CMIIW

Spoiler

Klo ngga salah solusinya harusnya ada $8$ pasangan

 

 

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