( 8 + √8 )(8 - √8) =
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2
Answer:
By using identity [ (a+b)(a-b) = a²-b² ]
( 8+√8) (8-√8) = 8²-(√8)² = 64 - 8 = 56
So, (8 +√8)(8 - √8) = 56
Answered by
0
Answer:
( 8 + √8 ) x (8 - √8)
( 8 + 2√2 ) x (8 - √8)
( 8 + 2√2 ) x ( 8 - 2√2 )
( a-b) (a+b) = a² - b² ( use this formula )
Therefore, 64-4x2 ( simplify )
64-8
56
Step-by-step explanation:
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