man scientist student holding tablet and working with various high school maths science formulas |
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| navigate by keyword : adult algebra background blackboard board calculate chalkboard college computer concept device drawing education equation equations formula formulas genius guy hand high knowledge learn lesson man math mathematical mathematics maths pad pen physics researcher scholar school science scientist solution student students study stylus symbol teach teacher university writing |
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| Man scientist or student holding tablet PC and working with various high school maths and science formulas standing on gray background. |
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