Thursday

April 17, 2014

April 17, 2014

Posted by **dee** on Sunday, July 29, 2007 at 11:53am.

my first answer is 1/5

my second answer is 10 -5/5

but the answere I have to choose from are:

(a) 20 - 55/5

(b) 20 - 5/5

(c) cannot be simplified

(d) 1/55

which is correct and if I'm not where did I go wrong?

√20/5 - 1/√5

= 2√5/5 - 1/√5*(√5/√5)

= 2√5/5 - √5/5

= √5/5

by the way:

1/√5 = √5/5 so your answer would be correct.

However, it is considered "better form" to have radicals in the denominator rationalized

**Related Questions**

math/algebra - simplify. 20/5 - 1/5 I come up with 2 different answers (1) 2...

Algebra 2 - The numbers i5 and -i5 are solutions to which equation? a. x^2...

Algebra Help Inverse One-to-one - I need to know if I have done this correctly. ...

COMPUTERS-EXCEL 2007 - which one of the following formulas accurately describes ...

Intermediate Algebra - Please explain how to solve this: (5 + 4)(5 - 1)

Trigonometry - What is the period of y = 3sin (1/3x-1/3)? A, 6 B. 3 C...

algebra - I am having a hard time solving my problem 220 + 5 80 - 7 5 Can...

algebra - I am having a hard time solving my problem 220 + 5 80 - 7 5 Can...

Math - (5 + 56)(5 - 56) is the answer -145 ???

college math 209 - write in simplified radical form by rationalizing the ...