Ayuden por favor nesecito las respuestas de estos trinomios simples y compuestos :a) (a - 1)² + 3(a - 1) - 108 =b) 15a² - 8a - 12 =c) 30m² + 17am - 21a² =d) 6m² - 13am - 15a² =e) 7x⁶ - 33x³ - 10 =?

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(a - b)² = a² - 2ab + b²

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