Friday

January 30, 2015

January 30, 2015

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

**Answer this Question**

**Related Questions**

algebra - 1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 ...

8th Grade Algebra-Radicals:Answer Check - 4. 311 + 411 Answer: 811 7. 72...

Math ( Can You check my Work?) - 1.an = 3n - 1 2. an = 2(2n - 3) 3.an = 4^n 4.an...

Math - Question 1 Write the first four terms of the sequence whose general term...

Math - an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3...

Math PLEASE HELP PLEASE PLEASE PLEASE - Question 1 Write the first four terms ...

Algebra - Will someone please check my answers? 1. Multiply. (a^+2ab-b^2)(a^2-...

8th Grade Algebra: Answer Check #2 - Add or Subtract (Radicals) { this means ...

8th Grade Algebra: Answer Check - Find the length of the 3rd side of each right ...

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