Предмет: Алгебра, автор: DAGESTANочка

Упростите выражения: а) (12a - 1)(в квадрате) - 1. б) (2a + 6b)(в квадрате) - 24ab.  в) 121 - (11 - 9x) (в квадрате) ПОЖАЛУЙСТА РЕШИТЕ!!! СРОЧНО НУЖНО!!!!!!!!!!

Ответы

Автор ответа: Castorea
0
(12a - 1)(в квадрате) - 1 = 144а(в квадрате) - 24а +1-1= 24а(6а - 1)
(2a + 6b)(в квадрате) - 24ab= 4a(в квадрате) + 24ab + 36b (в квадрате) - 24ab = 4a(в квад.) + 36b (в квад.)
121 - (11 - 9x)(в квад.)= 121 - (121 - 198x + 81x(в квад.) = 198x - 81 x(в квад.)
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