Posted by **Terri** on Friday, April 11, 2008 at 4:10pm.

Find the set of all integers, n, for which the fraction

20/(10-n*n) is an integer

I used n*n for n squared

I figured that 10-n*n must be a factor of 20 and the only answer that ended up working was +-3, is this right?

- algebra 2 -
**drwls**, Friday, April 11, 2008 at 6:24pm
20/(10 -n^2) must be 20, 10, 5, 4 , 2 or 1, with n an integer.

n can only be +/- 3 or 0.

## Answer This Question

## Related Questions

- Math - 1. Set I contains six consecutive integers. Set J contains all integers ...
- Integer math - Find 7 A)1/7 B)-7 C)7 D)0 Find -14 A)14 B)-14 C)1/14 D)0 If two ...
- MATH - Find the only positive integer whose cube is the sum of the cubes of ...
- math - The set S has the property that if a is in S, then a squared + a is also ...
- Algebra - The sum of two consecutive even integers is 118. A. Define a variable ...
- Algebra - The sum of two consecutive odd integers is 56. A. Define a variable ...
- Algebra - The larger of two positive integers is five more than twice the ...
- math - there are 8 consecutive integers that add up to 31. Only two of the ...
- Math11U - A Pythagorean Triple is a set of integers that satisfy the Pythagorean...
- algebra - Find two consecutive positive integers such that the sum of their ...

More Related Questions