Question

simplify root 125 +2 root 80-root 20​

Answer 1

⇒√125+2√80-√20

⇒√25×5 +2√16×5 -√4×5

⇒ 5√5 +2×4√5-2√5

⇒5√5 + 8√5 - 2√5

⇒13√5 -2√5

⇒11√5