How to make a square with this equation y2+18y+

asked Nov 5, 2024 230k views

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Answer: The missing value is 81.

Step-by-step explanation: In a square, the formula is
y^2 + 2y + y^2 ,

where the first y^2 is staying there. 18/2 is 9, and 9 squared is 81.

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