Answer:
x=-4/3
Step-by-step explanation:
3x-12=12x
3x-12x=12
-9/-3=12/-3
then -3 cancels
3x/3=-4/3
then 3 cancels 3
so x=-4/3
Answer:

And solving we got:

If we subtract 100 from both sides we got:



Step-by-step explanation:
For this case we have the following equation given:

We want to find a general expression given by:

Where the center is (h.k) and the radius is r.
We can begin completing the squares of the equation given and we got:

And solving we got:

If we subtract 100 from both sides we got:

Then we can conclude that the center is:

And the radius would be:
