To simplify numerical radical expressions

Question

Simplify. 

 

-11√80

Answer 1

Hi Rachel,

 

to simplify radicals we need to factor the number inside the radical to perfect square factors and other factors

 

so for the number 80 we can factor into 16 * 5

 

and then we get

 

-11*sqrt(16)*sqrt(5)

 

-11* 4 * sqrt(5)

 

-44Sqrt(5)

 

 

hope this helps