Question

4(1+x)>х-2

-2(2х+1) <3(х+2)

4(1-х)+5(х+8)>0

Answer 1

4/x^2-4-1/x-2=34/(x-2)(x+2)-1/x-2=34-(x+2)=3(x-2)(x+2)4-x-2=3(x^2+2x-2x-4)4-x-2=3x^2-124-x-2-3x^2+12=0