the passenger section of a train has width 2x-7, length 2x+3, and height x-2, with all dimensions in metres
Homework Answers
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
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the passenger section of a train has width 2x-7, length 2x+3, and height x-2, with all dimensions in metres
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