Question 659209
The Bin Laden's Living room is 12 by 16 feet, and he want to carpet it, except for a border of uniform width. What dimension should the carpet be if he can afford only 108 square ft?
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x = border width
Area = L*W
{{{108 = (12-x)*(16-x) = x^2 - 28x + 192}}}
{{{x^2 - 28x + 84 = 0}}}
*[invoke solve_quadratic_equation 1,-28,84]
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Use x2 =~ 3.417 feet
Dim's = 12-x by 16-x