Guest:
First this isn't really a question. I think what you mean is
Factorise x^2+12x+27
You might spell factorise with a z, it depends on what country you are in.
I am not going to do your question but i will do one that is very similar.
x
2+8x+15
You have to look for 2 numbers that multiply to 15 and add to 8
Since they multiply to give a positive number, they must both be the same sign.
And, since they add to give a positive number they both must be postive.
3x5=15
3+5=8
So 3 and 5 are the numbers I want.
x
2+8x+15=(x+3)(x+5)
Now you should be able to do your one.
If you are keen maybe you would like to try
x
2+4x-12
If you are not keen then it doesn't matter.
+118653 
