Gente me ajuda (OBM) Se x + y = 8 e XY = 15 qual valor de x² + 6xy + y²
tem q dar 124 mais o meu ta dando 154 n sei pq to fazendo assim
(x+y)² + 6.15
(8)² + 90
64 + 90 = 154.
onde ta o erro?
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