Question

simplify (√8-√2)(√8+√2)

Answer 1

let -_/8 be a and -_/2 be b
(a-b)(a+b)
a^2-b^2
=>8-2
=>6

Answer 2

$( \sqrt{8 } - \sqrt{2} )( \sqrt{8} + \sqrt{2} ) \\ = ( \sqrt{8} )^{2} - ( \sqrt{2} )^{2} \\ = 8 - 2 \\ = 6$
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