\documentclass[12pt]{article} \usepackage{amssymb,amsmath,amscd,concmath,amsfonts} \usepackage{color} \pagestyle{empty} \begin{document} \begin{equation*}h = 6.62 \times 10^{-34} \text{V}^{-1}\text{s}^{-1}\end{equation*} \end{document}