Answer: You would replace the x's with 10.
New equations: 2 . 10^2 + 3 . 10 - 1 & 10 + 4
2 . 10^2 + 3 . 10 - 1 = 229
10 + 4= 14
Area = 3,206 feet
Perimeter = 486 feet
(Sorry I could not write the polynomials.)
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