This is an example of an equation represented by subscript. View entire discussion 7 comments. Fn Fn-1 Fn2.
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Write chemical formulas under the names of the substances in the word equation. When the Special Characters dialog opens click the drop-down box on the right and click Superscript from the list of choices. You might also need to write a list of values such as these. Translate documents or write in a different language.