Bunuel wrote:
This post might help to get the ranges for (1) and (2) - "How to solve quadratic inequalities - Graphic approach": x2-4x-94661.html#p731476
If x is an integer, is |x| > 1?
First of all: is|x| > 1 means isx<-1 (-2, -3, -4, ...) orx>1 (2, 3, 4, ...), so for YES answerx can be any integer but -1, 0, and 1.
(1) (1 - 2x)(1 + x) < 0 --> rewrite as(2x-1)(x+1)>0
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