Question

Find the square root of 7-2√5​

Answer 1

5√5 = 11.8033989 or -2√5+7

Answer 2

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