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06-06-2018
Mathematics

contestada

Simplify the expression
(8-√5)(8+√5)
39
59
64+√5
69+16√5

Respuesta :

Аноним Аноним

06-06-2018

using the identity a^2 - b^2 = (a - b)(a + b):-

this is 8^2 - (sqrt5)^2 = 64 - 5 = 59 Answer

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