Question

how to express a^48?

Answer 1

enter it as a^{48} with the latex brackets

Answer 2

e.g.: \(a^{48}\)

Answer 3

\[a^{48}\]..thanks do you know how to enter a matrix,determinant?

Answer 4

I believe that has already been answered here - look through the closed questions and you should find it, together with lots of other tips.