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

asked Sep 17, 2017 221k views

4 votes

Simplify the radical expression

(8+√11)(8-√11)

A.53
B.75+16√11
C.-57
D.64+√11

by Bir

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5 votes

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

Answer A.

Networks answered Sep 17, 2017

8.0k points

2 votes

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

The answer is: 53.

IvanAtBest answered Sep 20, 2017