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Vimal wanted to buy a photo frame for his new home. He went to a shop and bought a square-shaped photo frame with the area \((p^2 + 6p + 9)\) \(cm^2\).
Help Vimal to calculate the side of the square-shaped photo frame.
The side of the photo frame is \(cm\).
[Note: In the case of multiple variables, enter in the order given in the question. Individual terms must be written as co-efficient followed by a variable.]