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yanakim127
@yanakim127
July 2022
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ПОМОГИ ПОЖАЛУЙСТА, ПРОШУ ОООЧЕНЬ СРОЧНО упростить (3а-2)(3а+2)-(3а+1)во 2 степени НАДО ОООЧЕНЬ СРОЧНО РЕШИТЬ
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ShirokovP
Verified answer
(3a - 2)(3a + 2) - (3a + 1)^2 =
= (3a)^2 - 2^2 - (9a^2 + 6a + 1) =
=
9a^2
- 4
- 9a^2
- 6a - 1 =
= - 6a - 5
2 votes
Thanks 1
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Answers & Comments
Verified answer
(3a - 2)(3a + 2) - (3a + 1)^2 == (3a)^2 - 2^2 - (9a^2 + 6a + 1) =
= 9a^2 - 4 - 9a^2 - 6a - 1 =
= - 6a - 5