Simplify by factoring √40

First thing is to find a pair of numbers that will multiply to 40, but one of them must be a square number.

In this case it would be √10√4

Notice √4 = 2


Therefore we have 2√10

--------------
Sorry i cant explain much better....

2√10, the calculated version is 6.3245532 but the first way is what i think youre looking for.

rad 40 = rad 4 times rad10
since rad 4 = 2
the solution is 2rad10

2√10