Question

-2.9=log [h with an exponent of +]

Answer 1

I can't really make out what you're saying here..

Answer 2

Lets see if I cannot write it a different way

Answer 3

Try the equation editor at the bottom of the post button.

Answer 4

-2.9=\[logh ^{+}\]

Answer 5

\[-\log[h ^{+}]\]