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x2 = 4 ↔ x2 - 4=0(x-2)(x+2)=0 then x =+2  or-2

y2 = 6 — y2 — 6 =0 → (x−√6)(x+√6) = 0

then y =±√6

if x = 2 and y = √6

=

then (2)1 +3( √ √/6 )3 = 16+18.√/6 if x=-2 and y=-√6

then (−2)4+3(−√6)3 = 16 - 18√6

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