3x2 + 27y2+ z2 -18xy + 6 root 3yz - 2 root 3 zx
factorise
Refer the answer to your query :
https://www.meritnation.com/ask-answer/question/factorise3x2-27y2-z2-18xy-6-3yz-2-3zx/polynomials/4631921
https://www.meritnation.com/ask-answer/question/factorise3x2-27y2-z2-18xy-6-3yz-2-3zx/polynomials/4631921