July 2022 1 3 Report
Упростите выражения:
(2а+5b)(5a-2b)-3(a+2b)(a-2b)

[tex](a^{2} - 3)(a^{4} +3 a^{2} +9)+a^{4} (1-a)(1+a)[/tex]

Желательно расписывая.
Заранее благодарю.
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