SVGs are infinitely scalable vector files. They print crisply at any resolution and do not pixelate. Microsoft Word Equation Editor Import
Use a web-based SVG exporter . It requires no installation and keeps your document looking sharp. indesign math plugin free
While a true, fully-functional, that does everything may be a myth, you can absolutely create a powerful, zero-cost mathematics workflow by combining the resources above. SVGs are infinitely scalable vector files