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√xyz = t t-1/t = t³ t²=1+t⁴ 1=1/t² + t² t⁴(t⁴+2+1/t⁴)/t⁴ | Algebra Quint

√xyz = t

t-1/t = t³

t²=1+t⁴

1=1/t² + t²

t⁴(t⁴+2+1/t⁴)/t⁴

= (t²+1/t²)²

=1²

= 1



Here is correct answer option B