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The image shows a whiteboard with mathematical equations written on it in green marker. The whiteboard is hanging on a light-colored wall. There are also some faint pencil marks on the wall. The equations appear to be related to algebra and calculus. On the left side of the whiteboard, there is an equation that reads "a+b+c=3 prove that a^2/(b+c) + b^2/(c+a) + c^2/(a+b) >= 3/2". Below this, there is another equation that appears to be a step in solving an equation, "20 = 2-x" and "x=2+20", "x=22". On the right side of the whiteboard, there are some more complex expressions involving variables and exponents, such as "c^5 x b^8" and "c^5 + a^5". There is also a diagram of a right-angled triangle. The scene is illuminated by artificial light, and there are no people visible in the image.
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