Question

simplify tye following expression
$( \sqrt{8} - \sqrt{2)}( \sqrt{8} + \sqrt{2)}$
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Answer 1

(√8 – √2 ) (√8 + √2)

= (√8)2 – (√2)2 [(a+b)(a-b)= a²-b²]

= 8 - 2 = 6