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steposvetlana [31]
4 years ago
8

A landscaper designs a garden border to run along the inside perimeter of a piece of property that is shaped like a

Mathematics
1 answer:
Karolina [17]4 years ago
6 0

Answer:

A = 4x^2 + 120x

Step-by-step explanation:

(39+2x)(21+2x)-(39*21) = 819 + 78x + 42x + 4x^2 - 819

A = 4x^2 + 120x

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