IF
a =
3+√5
2
Find a² + 1
92
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3
this is the answer of your question
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Step-by-step explanation:
a^2 = (3+root 5)^2
=3^2 +root5^2 + 2×3×root5
=9+5+6root5
a^2 + 1= 14+6root5+1
=15+6root5
sorry for using root instead of symbol because there is no root symbol in by keyboard
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