draw the following venn diagram: A n B'n C
(3ab)^2-4a divided by (-2b)
x^4+56x^3+1005x^2+5950x+10000=0
2x+33<-9+7x
(3ab)^2-4a*(-2b)
4(3x-5)≤11x-23
x/3>-12
22-4x≥76
1/x = 2
3x+27<51