Factorise the following, using the identity : \(a^2+2ab+b^2=(a+b)^2\)
 
1. \(x^2+6x+9\)
 
2. \(x^2+12x+36\)
Answer variants:
\((x+3)(x+2)\)
\((x+3)(x+3)\)
\((x+6)(x-6)\)
\((x+6)(x+6)\)