(2 square root 5 -square root 2) power 2
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Answer:
2(11-2√10)
Step-by-step explanation:
(2√5-√2)²
=a²+b²-2ab
=(2√5)²+(√2)²-2(2√5)(√2)
= 20+2-4√10
=22-4√10
=2(11-2√10)
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