3 years ago

Find the square root of 7-2√5

Mathematics

2 answers:

pickupchik [31]3 years ago

7 0

Answer:√5 - √2

Step-by-step 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

san4es73 [151]3 years ago

4 0

5√5 = 11.8033989 or -2√5+7

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Find the square root of 7-2√5​

Find the square root of 7-2√5