Question

Find the least rationalizing factor
2√5+ 4√2

plzz help me to solve this question​

Answer 1

$2 \sqrt{5} = 4.47.. \\ 4 \sqrt{2} = 5.65 ...\\ so ,\: according \: to \: question \\ = 2 \sqrt{5} + 4 \sqrt{2} \\ = 4.47 + 5.65 \\ = 10.12 ...$