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kolbaska11 [484]
3 years ago
6

HELP!!!!!!!!!!!!!

Mathematics
1 answer:
natita [175]3 years ago
7 0
A(x) = x^2 - 18x + 81
A(x) = (x - 9)(x - 9)
A(x) = (x - 9)^2

the length of the side is (x - 9)
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