A box unfolded into a 2D shape. The blue area is x + 2x^2 - 1 + 3x^2 and has a width of x + 1.

Candice is assembling a gift box for her friend, Jane. She is looking for enough wrapping paper to cover the length of the blue rectangular section of the box. Using the measurements given, calculate the length of the wrapping paper Candice will need.

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Type a concept, like “slope” or “photosynthesis”.

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