(5+2root2) (5-2root2)
STEMS
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Answered by
1
Answer:
use the identity
Step-by-step explanation:
(a+b)(a-b)=a square - b square
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Answered by
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a²-b² = (a+b)(a-b)
=> (5+2√2)(5-2√2)
=> 5²-(2√2)²
=> 25-8
=> 17
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