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1 vote
Find the square root of 7-2√5​

2 Answers

3 votes

5√5 = 11.8033989 or -2√5+7

User Prid
by
8.0k points
4 votes

Answer:√5 - √2

Explanation:

= √(5 + 2 - 2√10 )

= √{(√5)² +(√2)² - 2.√5.√2}

= √(√5 - √2)² (by identity a² + b² -2ab = ( a-b)²)

= √5 - √2

User Nuno Ribeiro
by
8.3k points

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