Question

Rezolvati inecuatia (-2)la puterea a doua[1-2(x+5)]>x, unde x apartine Z.

Answer 1

4(1-2x+10) > x
4(9-2x) >x
36-8x > x
36 > x+8x
36 > 9x 
x > 4 
Funda ? :) 

Answer 2

4 [1-2 (x+5)]>x
4 (1-2x-10)>x
4 (-2x-9)>x
-8x-36>x|+8x
-36>9x|:9
-4>x
x€{-5,-6,-7....}