G(x)=x^4-32x^2+256;x=-4
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To draw the 2 dimensional representation, we just "open" the box and flatten it. Once we have it opened, we find the area of each side and add them up for the total surface area. See the pic. Let me know if you have questions. :)
This one.
The doubly-shaded area is the solution set. The dashed line is not included.
The doubly-shaded area is the solution set. The dashed line is not included.