Question 668450
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
The width of a rectangular box is 3 times its height{{{highlight(x)}}} 
and its length is 2 more than its height{{{highlight(x)}}}.
its volume is 288 cubic
Translate into an equation: 
 lwh = 288 in^3
(x+2)(3x)x = 288
  3x^3 + 6x^2 = 288
  3x^3 + 6x^2 - 288 = 0
   x^3 + 2x^2 -96 = 0   x = 4, one solution
  using Synthetic Divsion
4	1	2	0	-96
 	 	4	24	96
 	1	6	24	0
results in:  x^2 + 6x + 24  with imaginary roots
height is 4in, length 6in and width is 12in