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Simplify the radical expression (8+√11)(8-√11) A.53 B.75+16√11 C.-57 D.64+√11

Simplify the radical expression (8+√11)(8-√11) A.53 B.75+16√11 C.-57 D.64+√11
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4 votes
Simplify the radical expression

(8+√11)(8-√11)

A.53
B.75+16√11
C.-57
D.64+√11

User Bir
by
8.3k points

2 Answers

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

Answer A.
User Networks
by
8.0k points
2 votes
(8 + √11)(8 - √11)
8^2 - √11^2
64 - √11^2
64 - 11
53

The answer is: 53.
User IvanAtBest
by
8.3k points
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