Answer :



Putting value x = 2, y = 3, z = 6;



Simplifying 1st part



= -√6 + √12


Simplifying 2nd part



= √18-√6


Simplifying 3rd part



= -√12 + √18


Putting all values we get;


(-√6 + √12) – (√18 - √6) + (-√12 + √18)


-√6 + √12 – √18 + √6 – √12 + √18


= 0


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