Question

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Answer 1

Step-by-step explanation:

using property ( a+b+c) ^2 = a^2 + b ^2 + c ^2 + 2ab + 2bc + 2ac

here a= √2 x

b = 2y

c = - √3 z

( √ 2x + 2y - √ 3 z) ^ 2 = 2x ^2 + 4y ^ 2 + 3 z^2 + 4√2 xy - 4√3 yz - 2√6 xz