Question

Find square root of 7-2root10

Answer 1

Answer:

7- 2 root 10 = 5+2-2root 10

=( root 5)² +( root2)² - 2 ( root5)(root2)

7- 2root 10 = (root 5 - root 2)²

= root 7- 2 root 10

= root 5 - root 2

Answer 2

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√5 - √2