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x + y = 5 dan x² + y² = 17
y = 5 - x
Substitusikan x² + (5 - x)² = 17
x² + 25 - 10x + x² = 17
2x² - 10x + 8 = 0
x² - 5x + 4 = 0
(x - 4)(x - 1) = 0
Diperoleh x₁ = 1, dan substitusi ke y = 5 - x didapat y₁ = 4
Diperoleh x₂ = 4, dan substitusi ke y = 5 - x didapat y₂ = 1
∴ HP = {(1, 4), (4, 1)}
___selesai___
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