Answer :
Factorization of the given trinomial [tex]3x^{2} +36x+81[/tex] is equals to [tex]3(x+ 3)(x + 9)[/tex].
What is trinomial?
" Trinomial is defined as the polynomial which contains three terms."
According to the question,
Given trinomial ,
[tex]3x^{2} +36x+81[/tex]
Factorize the given trinomial we get,
[tex]3x^{2} +36x+81\\\\=3x^{2} + 27x + 9x + 81\\\\=3x(x +9) + 9(x+ 9)\\\\= (3x +9) (x+ 9)\\\\= 3 (x+3)(x + 9)[/tex]
Hence, Option (C) is the correct answer.
Learn more about trinomial here
https://brainly.com/question/16347049
#SPJ2