Question

anybody can tell this answer ​

Answer 1

Answer:

B

Explanation:

√5^2+1^2-2^2=√25+1-4=√22

Answer 2

Answer:

Explanation:

$\sqrt{5^{2} + 1^{2} + ( - 2) ^{2} } \\ = \sqrt{5 + 1 + 4} \\ = \sqrt{10} \: \: ( \:d \: \: )$