00:01
All righty, we have x over 3 minus 2y to the 5th power.
00:05
So let's go ahead and jump into it.
00:07
X over 3 is going to represent our x.
00:10
Negative 2y is going to represent our y.
00:13
So n is 5.
00:15
We're going to start with r is 0.
00:17
So 5 factorial over 0 factorial, 5 factorial.
00:28
And we'll have x over 3 to the 5th power.
00:33
Negative 2y to the 0 power.
00:40
Plus, now we'll have r is 1, so 5 factorial over 1 factorial, because 5 minus 1 is 4.
00:50
And we'll say x over 3 to the 4th power, negative 2y to the first power.
01:00
Now r is 2 to 5 minus 2 is 3.
01:05
So we'll have x over, oops, x over three to the third power, negative 2y to the second power.
01:23
As we remember, as always, parentheses are super duper important.
01:30
So we'll have 3, 2, x over 3 squared, negative 2, y third.
01:40
I am definitely going to run out of room here.
01:44
Maybe if i scrunch it really good.
01:46
Okay, 5 factorial, 4 factorial, 1 factorial, x over 3 to the first power, negative 2y to the 4th power.
02:04
Last term, we have 5 factorial over 5 factorial, x over 3 to the 0 power, and then i'm going to scrunch it right here, negative 2y to the fifth power.
02:22
Okay, that's a little scrunchy over here, but we will revisit that.
02:29
Let's come back over to the start and start simplifying.
02:33
That's one, that's one, that's one.
02:36
So we have x to the fifth over three to the fifth.
02:40
So we know three to the fifth is 243.
02:44
So we have, i'm going to write it as 1 over 243 x to the 5th.
02:53
Or we could just write it x to the 5th over 1, over 243.
02:58
It's up to you.
02:59
I just like looking at it that way.
03:01
Over here we have 5, 4, 3, 2, 1 over 4, 3, 2, 1.
03:12
That cancels out...