Homework Help

What is ∜25 - √45 + √80show step by step solution to explain the answer

user profile pic

spock6 | Student, Undergraduate | (Level 1) Honors

Posted May 19, 2012 at 12:09 PM via web

dislike 2 like

What is ∜25 - √45 + √80

show step by step solution to explain the answer

1 Answer | Add Yours

user profile pic

thilina-g | College Teacher | (Level 1) Educator

Posted May 19, 2012 at 12:34 PM (Answer #1)

dislike 1 like

`root(4)25 -sqrt(45)+sqrt(80)`

This can be written as,

`= root(4)(5^2) -sqrt(3^2 xx 5)+sqrt(4^2 xx 5)`

`= sqrt(5) -3sqrt(5)+4sqrt(5)`

`= 2sqrt(5)`

 

Therefore,

`root(4)25 -sqrt(45)+sqrt(80) = 2sqrt(5)`

 

 

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes