# How do you simplify #2^3 - 2^-1#?

##### 2 Answers

Oct 3, 2015

#### Answer:

#### Explanation:

and

So

Oct 3, 2015

#### Answer:

7.5

#### Explanation:

First, remove the negative exponent. You can do this by getting the reciprocal of the base.

Next, get the cube of

Subtract 1/2 from 8.

The answer is