00:01
Okay, so i need to go ahead and i need to factor the two polynomials on the left side.
00:07
They're both just different from squares.
00:10
The third of four is two.
00:12
The square of a squared is a.
00:14
The square root of a squared is a.
00:16
The square root of a square is a.
00:19
So i can rewrite both of those as 2a plus one times 2a minus 1 over a plus 2, a minus 2.
00:35
Then i have divided by 2a minus 1.
00:39
And over here, what i'm going to do is i'm going to flip the a and the 2 in order.
00:44
So the negative a, the negative has to stay with a.
00:47
So i have negative a plus 2.
00:50
And then i'm going to factor out a negative 1.
00:53
So all that does is kind of change the sign of both of them...