00:01
All right, so this first step is wanting us to factor the denominator, which is x squared minus 5.
00:13
Okay, so to factor this, you have to break it down into 2.
00:18
So x squared is going to break down to x times x.
00:21
Negative 5 is going to break down to a positive square root of 5 and a negative square root of 5.
00:28
And you can check that by distributing it back out, and you'll see that you get x squared.
00:32
Minus 5.
00:34
And part b is wanting us to determine the form of the partial fraction decomposition and sense the numerator which is 8x minus 2 square root of 5 doesn't have any exponents.
00:48
Then the form is going to be i'm going to go ahead and put the numerator.
00:55
So the form is going to be 8 or a over x plus square root of 5 plus b over x minus square root of 5 and i just got these bottom ones from here.
01:13
All right now we can move on to c and it's wanting us to determine the values of the constants and the partial fraction decompositions.
01:26
Okay so the first thing is wanting us to do is go ahead and cross multiply.
01:38
So a times x minus square root of five plus b...