Complex math learning and formula on a chalkboard. i equals square root of negative 1. Handwritten on chalkboard

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Complex math learning and formula on a chalkboard. i equals square root of negative 1. Handwritten on chalkboard

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Size: 3500px × 2334px
Location: Montenegro
Photo credit: © Ivan Serebriannikov / Alamy / Afripics
License: Royalty Free
Model Released: No

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