(7 √3+ √2)^2 - 14(√6+2)

Question

(7 √3+ √2)^2 - 14(√6+2)

Answer 1

(7√3+√2)²-14(√6+2)=147+2*7√3*√2+2-14√6-28=147+14√6+2-14√6-28=121