00:01
Hi guys, so we have this problem in which we need to find out the number of distinct solution.
00:05
The fx is given to us, which is about x square minus 1, and this is what f of, f of x, of x.
00:17
This thing is equal to 0.
00:19
Basically f of f of x is about 0.
00:27
So in order to find out this thing, first we need to find out f f f of x, f of x.
00:34
So, this is fx square minus 1.
00:41
So basically you can write this thing as what x square minus 1, s square minus 1.
00:46
So you have what x square minus 2 x square plus 1 minus 1.
00:54
Here you get x to the power 4 because we are squaring x squared.
00:58
So you have what x to the power 4 and this is what 2 x square...