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si P es punto medio de BC se tiene que BP = PC:
A B P C
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x y y
Del dato del problema:
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AB² + AC² = 46
x² + (x + 2y)² = 46
x² + x² + 2(x)(2y) + (2y)² = 46
2x² + 4xy + 4y² = 46 Simplificando 2
x² + 2xy + 2y² = 23
Nos Piden:
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AP² + BP² = (x + y)² + y²
AP² + BP² = x² +2xy+ y² + y²
AP² + BP² = x² + 2xy + 2y² Reemplazamos: x² + 2xy + 2y² = 23
AP² + BP² = 23
Respuesta:
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Se tiene AP² + BP² = 23