October 2018 1 99 Report
. Identifica cuales de los siguientes trinomios son cuadrados perfectos.

1. b² + 2bd + d²
2. x²y² + 4xyz⁴ + 4z⁸
3. 25s² + 20st³ + 4t⁶
4. 49x⁸ + 14x⁴y + 64y²
5. 9m⁶ + 45n² + 25n⁴
6. x² - 14xy - 49
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