Mathematics
Mathematics, 20.11.2020 02:50, Katyazamo

A rectangle has a length of x and a width of 3x3 + 9 − x2. Find the perimeter of the rectangle when the length is 6 feet.

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A rectangle has a length of x and a width of 3x3 + 9 − x2. Find the perimeter of the rectangle when...

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