gabrielcharter gabrielcharter
  • 06-06-2018
  • Mathematics
contestada

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

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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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