Question

if x =3+√5 find the value of x²+1/x²​

Answer 1

Answer:

x=3+√5

x²+1/x²=(3+√5)²+1/(3+√5)²

=(3)²+2×3×√5+(√5)²+1/(3)²+2×3×√5+(√5)²

=9+6√5+5+1/9+6√5+5

=14+6√5+1/14+6√5

Answer 2

Answer:

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