Question

Question No. 12 with full answer.
(15 Points)

Answer 1

(a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ca
so (√2x+2y-√3z)^2=2x^2+4y^2+3z^2+4√2xy-4√3yz-2√6xz
this is Ur required result