<PRE><B>Question 467052</B>
John increased the area of his garden by 120 ft2. The original garden was 12 ft. by 16 ft., and he increased the length and the width by the same amount. Find the exact dimensions of the new garden and approximate the dimensions in feet and inches. 
The original area was 12*16 = 192 sq ft
192 + 120 = 312 sq ft
(12+x)*(16+x) = 312
{{{x^2 + 28x + 192 = 312}}}
{{{x^2 + 28x - 120 = 0}}}
*[invoke solve_quadratic_equation 1,28,-120]
Ignore the neg solution
x = sqrt(316) - 14 feet added to 12 &amp; 16
x = 3.776 ft
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You can convert to inches, etc</PRE>