Question

The value of (3+√5)² (3-√√5)² is​

Answer 1

Answer:

(3+√5)² (3-√5)²

(3²+2•3•√5+√5²)(3²-2•3•√5+√5²)

(14+6√5)(14-6√5)

(14×14)-(14•6√5)+(6√5•14)(-6√5×6√5)

196-84√5+84√5-36×5

=16

Therefore 16 is the correct answer

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