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1 September, 00:30

Simplify the radical expression

(8+√11) (8-√11)

A. 53

B. 75+16√11

C.-57

D. 64+√11

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Answers (2)
  1. 1 September, 00:47
    0
    (8 + root11) (8 - root11) =

    64 - root11 + root11 - 11 =

    64 - 11 = 53

    Answer A.
  2. 1 September, 00:56
    0
    (8 + √11) (8 - √11)

    8^2 - √11^2

    64 - √11^2

    64 - 11

    53

    The answer is: 53.
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