Question

How do you simplify `2sqrt45-2sqrt5`?

Answer 1

The simplified form of given expression is `4√5`

Explanation:

`2√45−2√5`
`=2√(9*5)−2√5`
`=2√9√5−2√5`
`=2(3)√5−2√5`
`=6√5−2√5`

Taking `√5` common from both terms
`=√5(6−2)`
`=√5(4)`
`=4√5`