00:01
This problem asks us to evaluate for x is equal to negative 5.
00:06
So that means for every value of x i see, i'm going to replace it with negative 5.
00:13
So let's start that out first.
00:15
So i have 20 times negative 5 to the negative second power plus negative 5 to the negative first power.
00:30
From here what we can do is we can actually use an exponent property and we're going to use the one that looks like this.
00:37
If we have a base to a negative exponent, we can write it as a fraction with one on top, with that exponent now positive in the denominator.
00:51
So let's use that.
00:52
We're going to have 20 times 1 over negative 5 to the second power, plus.
01:00
Plus 1 over negative 5 to the first power.
01:07
We're going to combine these into a single fraction before we add.
01:12
So 20 over negative 5 squared plus 1 over negative 5 to the first.
01:23
Next we'll go ahead and simplify our exponents...