Formulas cannot be calculated in LibreOffice Math because it is a formula editor for writing and showing formulas and not a calculation program. LibreOffice - Math is described as Math is the LibreOffice suites formula editor that can be invoked in your text documents spreadsheets presentations and drawings to enable you to insert and is a well-known app in the Education Reference category. There are more than 10 alternatives to LibreOffice - Math for a variety of platforms including Windows Mac Linux the Web and iPad.
Math does not carry out any actual calculation its just a tool to help you in typing and formating complex math formulas.
When used inside Writer the equation is treated as an object inside the text document. It is most commonly used as an equation editor for text documents but it can also be used with other types of documents or stand-alone. When used inside Writer the equation is treated as an object inside the text document. LibreOffice Math is a formula editor you can use to create or edit formulas equations in a symbolic form.