00:01
Given that the width of a rectangle is equal to x and the length of this rectangle is equal to, well, the square root of x minus 1.
00:08
And we're told that the width here is two times the length.
00:13
So if the width is two times the length, then the width x, right, is equal to two times the length, or two times the square root of x minus one.
00:26
So what are the dimensions? well, so we're basically fine.
00:31
Let's go ahead and find what the width is.
00:33
So we can go ahead.
00:35
We can divide through by 2 to give us that x over 2 is equal to the square root of x minus 1.
00:46
Now if we square both sides here, we get that, well, x squared over 4 is going to be equal to the square root of x minus 1 squared.
00:56
Which is going to be x minus 1.
00:59
Now if we multiply both sides by 4, we get that x squared is equal to 4 times x minus 1...