Resolver (3+sqrt(5))(3-sqrt(5))= | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$(3+ \sqrt{ 5 } )(3- \sqrt{ 5 } )=$$