Rules of Exponents:

(-1) Raised to an Exponent

What happens when we multiply \((-1)\) to itself multiple times? There is a pattern to find that makes simplifying exponent problems with a negative base much more simple.

Video Source (07:57 mins) | Transcript

Video Source (08:22 mins) | Transcript

The basic rule when a negative number is raised to an exponent \(({-}{\text{b}})^{\text{x}}\):

It is important to know that \(-{\text{b}}^{\text{x}}\) is different than \(({-}{\text{b}})^{\text{x}}\). When you have \(-{\text{b}}^{\text{x}}\) , where the negative is not inside the parentheses, the exponent does not apply to it. This is because of the order of operations.

Additional Resources

Practice Problems

Evaluate the following expressions:

  1. \(({-}1)^{5}=\)

  2. \(({-}1)^{4}=\)

  3. \(({-}1)^{105}=\)

  4. \(({-}1)^{236}=\)

  5. \(({-}5)^{3}=\)

  6. \(({-}7)^{4}=\)

  7. \((-{\text{a}})^{6}=\)

  8. \(-1^{2}=\)

  9. \(-2^{4}=\)

Solutions

  1. \(-1\) (Written Solution)
  2. 1
  3. \(-1\)
  4. 1
  5. \(-125\) (Solution Video | Transcript)
  6. \(2401\)
  7. \({\text{a}}^{6}\) (Solution Video | Transcript)
  8. \(-1\)(Written Solution)
  9. \(-16\)(Written Solution)