Answer
False. Middle term, twice the product of the expression being squared in the first and last terms is missing.
$x^{2}+12x+36 = (x+6)^{2}$
Work Step by Step
$(x+6)^{2} $ is the perfect square trinomial.
Using the formula,
$ A^{2}+ 2.A.B+B^{2} =(A+B)^{2}$
$x^{2}+ 2.x.6+6^{2} =(x+6)^{2}$
$x^{2}+ 12x+36 =(x+6)^{2}$
