Math
posted by Dee .
How do you express
(sq.root of 3 + 1)(sq.root of 3  1) in simplest form?

Math 
Reiny
(√3 + 1)(√3  1)
= 3  1
= 2
this has the pattern of the difference of squares just like
(a+b)(ab) = a^2  b2
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