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Verified answer
169 = 13²Dengan phytagoras, maka
13² = 12² + 5²
Dengan phytagoras lagi, maka
5² = 4² + 3²
sehingga,
13² = 169 = 12² + 4² + 3²
Jadi, a + b + c = 12 + 4 + 3
=19