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Aplicas.
Productos Notables.
(a + b)² = a² + 2ab + b²
(xy²/9 + 2)² =
(xy²/9)² + 2(xy²/9)(2) + 2² =
x²(y²)²/9² + 4xy²/9 + 4 =
x²y⁴/81 + 4xy²/9 + 4
Respuesta.
x²y⁴/81 + 4xy²/9 + 4