1.

gkl 1L =3, hionddho valdo uqEL- 1

Answer»

(u+1/u)²=u²+1/u²+29-2=u²+1/u²u²+1/u²=7

(u²+1/u²)²=u⁴+1/u⁴+249-2=u⁴+1/u⁴u⁴+1/u⁴=47



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