Just use your knowledge that V = LxWxH
117 = (2x-7)(2x+3)(x-2)
4x^3 - 16x^2 - 5x - 75 = 0
(x-5)(4x^2 + 4x + 15)
x = 5 is the only real solution
W = 3
L = 13
H = 3
the passenger section of a train has width 2x-7, length 2x+3, and height x-2, with all dimensions in metres. solve a polynomial equation to determine the dimensions of the section of the train if the volume is 117m^3.
1 answer
1 answer