5 or 12
It also equals 13 12.
X=-3
It is a quadratic equation in X, with two real roots.
The answer is 4 squared minus 2 squared as 4 squared is 16 minus 2 squared, which is 4, gives you 12 as an answer.
4 squared minus 2 squared equals 12
5 or 12
It also equals 13 12.
X=-3
-22 - 12 = -8
It is a quadratic equation in X, with two real roots.
The answer is 4 squared minus 2 squared as 4 squared is 16 minus 2 squared, which is 4, gives you 12 as an answer.
Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "times", "equals". There is no visible symbol between x and 12.
If: x^2 -8x = -12 then x^2-8x+12 = 0 and so x = 2 or x = 6
There is nothing to "do".
3x2 when x = 2 is the answer 3 X 4 = 12 or is the answer (3 X 2)2 = 62 = 36
X = √63