Chapter 4.6, Problem 1E

To determine

To write the expression $7^{-2}$ using only positive exponents.

Answer to Problem 1E

  $=\frac{1}{7^2}$

Explanation of Solution

Given information: $7^{-2}$

To write the expression using positive exponents.

  $7^{-2}$

  $=\frac{1}{7^2}$ Since 7 has a negative number in the exponents, it could be rewritten as a fraction.

  $=\frac{1}{7^2}$ or $=\frac{1}{49}$ This is the positive exponent