Question

simplify
$\frac{4 + \sqrt{5} }{4 - \sqrt{5} ?} + \frac{4 - \sqrt{5} }{4 + \sqrt{5} ?}$
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Answer 1

Answer:

42/11

Step-by-step explanation:

[(4+√5)/(4-√5)]+[(4-√5)/(4+√5)]

=[(4+√5)²+(4-√5)²]/4²-5

=2(16+5)/(16-5)

=2(21)/(11)

=42/11