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27-03-2022
Mathematics

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The length of a side of a square is (2x + 9) km. Find the area of the square in terms of the variable x.

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ZEROACEOFSPADES ZEROACEOFSPADES

27-03-2022

(2x + 9)^2
= 2x(2x + 9) + 9(2x + 9)
= 4x^2 + 36x + 81

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