Предмет: Алгебра, автор: begimot

решите неравенство
(1-х)(3-4х)-(2х+1)(2х-1)<11

Ответы

Автор ответа: кенгуру2013
0

3х-4х-3х+4х"2-(4х"2-2х+2х-1)<11

4х-4х"2-1<11

4х<11-1

4х<10

х<2.5

 

"2-это значит в квадрате

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