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csekolaakaine
csekolaakaine csekolaakaine
  • 13-05-2016
  • Mathematics
Answered

simplify the radical expression


(8+√11)(8-√11)


A.53

B.75+16√11

C.-57

D.64+√11

Verified Answer :

SmarticalParticals
SmarticalParticals SmarticalParticals
  • 13-05-2016

(8 + root11)(8 - root11) =
64 - root11 + root11 - 11 =
64 - 11 = 53

Answer A.

Answer Link
Exvited
Exvited Exvited
  • 14-05-2016

(8 + √11)(8 - √11)
8^2 - √11^2
64 - √11^2
64 - 11
53

The answer is: 53.

Answer Link

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