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Alireza Savand · Answer 1 · 2021-03-02T23:05:03+0000

Perimeter

4x-7 plus 4x-7 plus 10x^2 + 4x - 2 plus 10x^2 + 4x -2.

8x - 14 plus 20x^2 + 8x - 4

20x^2 + 16x - 18

(x + 36) (x+10)

x = {36, 7}

gotta go, so I cannot do the rest. I hope that helps a bit.

Smartsanja · Answer 2 · 2021-03-06T00:21:47+0000

Just add up the lengths of the four sides, and you have the perimeter.

The perimeter is:
(4x-7)*2 + (10x^2+4x-2)*2 =
8x-14 + 20x^2+8x-4 =
20x^2 + 16x - 18

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