2(m+1)(m-1)-(4+m)(3+2m)<19

Question

2(m+1)(m-1)-(4+m)(3+2m)<19

Answer 1

2(m^2-1)-12-8m-3m-2m^2<19</p>

-11m<19+12+2</p>

-11m<33</p>

m>-3

m∈(-3;+∞)