2(m+1)(m-1)-(4+m)(3+2m)<19
2(m+1)(m-1)-(4+m)(3+2m) = 2m2-2 - 12 - 8m -3m -2m2 = -14 -11m<19
-11m<33
m<-3
2(m+1)(m-1)-(4+m)(3+2m)<19
2(m+1)(m-1)-(4+m)(3+2m) = 2m2-2 - 12 - 8m -3m -2m2 = -14 -11m<19
-11m<33
m<-3