Question

$3 {x}^{2} +2 {y}^{2} + 6 + 2 \sqrt{6}xy - 6 \sqrt{2}x - 4 \sqrt{3} y$
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Answer 1

Stim ca:  a²+b²+c²+2ab+2ac+2bc=(a+b+c)²

3x²+2y²+6+2√6xy-6√2x-4√3y

a=√3x; b=√2y; c= -√6

3x²+2y²+6+2√6xy-6√2x-4√3y= (√3x+√2y-√6)²