00:03
51, let's determine the restrictions on x.
00:07
And what that means, again, is we want to find the values of x that would cause any of those denominators to become zero.
00:15
Because remember, division by zero is undefined.
00:19
And since we have variables down here and those denominators, potentially there are some values of x that would cause those to become zero.
00:28
And that's not defined.
00:29
So those are the values that we put the restrictions upon.
00:33
And algebraically, all that means is you're going to take that denominator and set it equal to zero and solve.
00:42
And you're going to take this denominator and set it equal to zero and solve.
00:50
And any of those x values would represent values causing the denominators to become zero, one or the other.
00:56
And that those values must be restricted from the solution set.
01:02
All right.
01:03
So here, just a little bit of basic factoring.
01:05
This one here on the right, we can actually just solve by taking square root...