what is b3+ ac / ab + 2bc if a=-2 b=3 and c=4.2 ?
(b3+ac)/(ab+2bc)=?
(33+-2(4.2))/(-2(3)+2(3(4.2)))
(27-8.4)/(-6+25.2)
18.6/19.2
0.96875
With the given values of each variable, b3+ac/ab+2bc = 0.96875.
+5265 
