/sci/ - Science & Math

I still don't understand what "completing the square" really was. Given

6x^2 + 12x + 8 = 152

You first get it to a particular form, right?
so divide by 6 and move the constant on the right

x^2 + 2x = 24

Then you imagine you have a square
x by x
2 by x
and then a square with an area of 24
Then you arrange these pieces to form a square with a hole in it? Like in this case we are missing another rectangle of size 2 by x to form a square on the left side
Then what? Do you pretend you have this missing rectangle and say this new square you formed has an area of 24? To me that doesnt give the right answer, since it would result in (x+2)^2 = 24

>>16124234
>>16124234
>DM isn't just injected into the gaps, it is a predictive model.
Interesting if true. Can you point me to any theory that predicts dark matter that in fact does not assume the existence of dark matter?