Question

How do you simplify `2k^-1` and write it using only positive exponents?

Answer 1

Use these two rules of exponents to simplify this expression:

`x^color(red)(a) = 1/x^color(red)(-a)` and `a = a^color(red)(1)`

`2k^color(red)(-1) = 2/k^color(red)(- -1) = 2/k^1 = 2/k`