Ответ:
(2a – 3)²– 3a(a – 2)=4а²-6а-6а+9-3а²+6а=а²-6а+9
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Ответ:
(2a – 3)²– 3a(a – 2)=4а²-6а-6а+9-3а²+6а=а²-6а+9