00:01
Okay, this i want to solve if i complete the square.
00:04
So what we do is, first of all, we write it, x squared minus 12x, either space equals minus 23.
00:14
It's rearranged it, leave a space there.
00:17
Now, next look at the x coefficient, which you see here is minus 12.
00:24
You divide that by 2 and you square the result.
00:28
Okay, that's how you do it every time.
00:31
1 x squared first, that's very important, 1x squared.
00:35
Take the x coefficient negative 12, divided by 2, that's minus 6, square it and get 36.
00:47
Next step is you will add here 36, and to maintain the equation, and we'll add here also 36.
00:58
So it's still balanced...